ĐỀ KIỂM TRA VẬT LÍ 11 NÂNG CAO

+re)

KIEM TRA 45'BAI I HK II

I : B{n chdi d0ng dien rrong qh {t bdn d6n

li

,{)t0ng chuydn ddi cd hddng ctia cdcdlecrron vi 16 trdng ,gg.gc chi6u dien rrtrt]ngr'
,>Beddng chuydn ddi c6 h ddng cfia cdcdlecr ronvi 16 trdng

cDn

g

chidu di€n rrurirng.

theo chidu cliQn trtrilng

vi

16 trdng

ngdqrc chi6u cliQn trufdng.

plodng chuydn ddi c6 hudng ctia c6c 16

/

nguQc chidu diQn trdr)ng.
'trrt

Ce u 2: Chon c6u
lt)i

dfing

EEl".tr,rn rr/ do vi
cIQ

cdc h4t

16

vi Olectron

,,u

rd do vd 16 trdng ddu chuydn ctQng ngugc chi6u diQn tnrdng.

W!Elecuon

,&*a,

trdng theo chidu diQn tn/ttng

.

trdng ddu mang diQn tich 6m.

tii diQn phg thu6c ra't nhi6u vio cdc y€u td b6n ngodi nhu nhier dO,

t1p dtdt, mrfc cI6 chidu siing.

/OoO

linh tl$ng cria cdc hqt

CAu 3: Ch<.rn phdt bidu

.'

tii

cli€n hdu nhrr kh6ng thay ddi khi nhiQt dQ tlng

dring

o

@Cf,ft b{n ct6n loai n nhi6m diQn'Am do sdh4t Clecrron ril clo nhi6u hcrn ciic: 16 trdng.
re7Khi nhiQt do cing cao rhi chdi br{n d5n nhidm diQn cdng ltln
m6c phdn cdc ngtrQc vdo lsrr khudch tiin crta c6,.c hat cO b6n. l

PKhi
tlng f:rrilng

PDdng
Ced

cliQn

thu{n

ri

ddng khudch t6n cria c6c h4t ccl b6n;

4.:Ph/atbidu nio sau d6y

FCa*
F

fng til

li

clai

lu-o.

li

khOng dring?

ng d{c tnrng cho rr} tnrdng vd mdt t6c dgng lrrc.

UU ltln cfia c6m rfng tfi drrqc xdc ttinh theo c6ng thfic B

ctrdng dQ dOng rtiQn I

FrO
t

phs thu6c vio

vi chi6u dii doan d6y d6n ddt trong tr} trudng.

ltln cria cim r?ng til dugc xr{c dinh theo c6ng rhfc B =
"-

vio crrdng dQ ddng

diQn I

pCa*

Ii

rfng ril

=nk
_.l.

I.l.rrro

kh6ng phu thuQc

vi chi6u dii do4n d6y ddn d{t trong tir rrldng

dai lrrgng vecrd.

Ceu 5! phdt bidu nio sau aay la kh6ng dring?

til tiic dung I6n

mQt doan d6y d6n mang ddng rliQn clar rrong
l0 thudn vdi crrdng dQ ddng diQn rrong do4n d6y.

Yl-Vc

til

trurlng ddu ri

til.tdc dung l6n mOt doan d6y d5n mang ddng clign dat rrong tu tnlrlng ddu ti
,Ftnt
l0 thd{n vdi chi6u

dii

ctia doan d6y.

"

5

,rf


$f,-rfc

t- tir tiic dqng l€n mQt do4n dty d6n mang dbng diQn dat trong til trdtfig ddu ti

lq thu{n vdi g6c hqlp bdi do4n ddy

vi

it'tL

drrdng srfc tU.

til tric dgng 16n mQt doan ddy d6n mang ddng
l0 thufld vtli cdm rlng tr} cl{t trong doqn ddy.

X

Lr,rc

C0u 6: Phr{t bidu nio sau cl6y ln drfing

Wo

mQt

cli€n cl+t

tron! tif triftJng ddu ti
'i

S

?

doln d6y d6n mang ddng di€n I d{t song song vdi drrdng sfc

tU, chidu ctia

ddng cfign ngugc chi6u vdi'chi6u cfia drldng srl'c tif.

+'q*&h

til lu6n bXhg khdng khi tdng crrdng dQ ddng diQn.

,[)l-ryc
'pL,r.
til Ungkhi tlng cudng dQ ddng tliQn.
/
'\gflyc

ttr girim khi
--'-- tdng
----o cudng
-----e <10
-i ddng
----c, diQn.
r -?tir adi ctridu khi ta Adi chidu ddng ctiQn.

i

Pl-qrc

C6u 7:. MQt do4n diy d6n dni 5(cm) d{t trong til tnldng d6uvi vu6ng g6c v(li vecttl c{m
ri'ng til. Dbng diEn chAy qua ddy c6 crrdng d0 0,75 (A). LUc tr) tr{c dUng I€n rloan df,y d6 li
3.1fe(N). Cdm rfng tr} ctia til trtfdng cl6 c6 ttO ldn li:

YU.4

(T).

o

r$r).g (T).
l'/

F3,o

(T).

Fpl.Z

(T).

#

Ceu 8: Phdt bidu nio sau ddy le khOng

ddn*

IvIOt do4n ctdy cl6n th8ng mang dbng dien

I d{t trong tr}

)q},

I{c tif tiic clqng l€n rnei phdn ctia do4n dAy.

IE

tU. tir chi t6c dung vio trung didm cria rlo4n dAy

PfU.

E

/
C6u'9:

\r,

til chi t6c dgng khi do4n ddy kh6ng

soi'rg song

trdc'Ing ddu thi

vdi drrdng

sr?c

til.

tuc tU tdc dqng l€n do4n ddy c6 Oidm dat la trung aidm cria do4n d6y.

MQt doan ddy d6n thfng MN dei 6 (crn) c6 ddng cli€n I = 5 (A) d{t trong til trut'rng
'7
ddu c(r c6m ri'ng tr) B = 0,5 (T). LUc tir tdc dgng l6n clo4n d6y c6 d0 ldn F = ,5.10'2 (N).
G(rc cr hrlp bili ddy MN vi dddng cim r?ng til

X 0,s".

F.t

li

"

F.uo".

Frn"

Cu 10: MQt ddy d5n thfirg c6 ddng tliQn dat trong vthg khdng gian c6
hinh vC. LUc til tdc dUng l6n ddy c6

)6}

F
p

phtrcrng ngang hudng sang

phudng

ttdi

rgulg litldng sang Phei

phddng *l+Ing dfng hddng l6n.

le
XD phddngthhng clfng hrrdng xudng.
/
C6u 11: Phrit bidu nio sau d6y la df ng ?

;1

tr) tnldng

ddu nhu


Y0Dtrdns srlc tr} ciia tr) trrrilng gdy ra bdi ddng cli€n thSng dai la nhfrng dti,)ng thfrng
/"
song song vr3i ddng diQn.
l
B?Errdns sfc til cria til trddng g6'y rabdi ddng di6n thEng dai Ia nhfrng cltrtrng rrirn..

pOuOng

s(rc tr) cfia

til

tnrdng

gAy

ra br3i ddng diQn thLngafi ra nhtrng
song Jong ciich ddu nhau.

p:Orrcfng srlc tilctia til tntdng gdy ra bdi ddng diQn th8ng dni Ii nhfrng duirng trirn
ddng t6m nlm trong mlt ph8ng vu6ng g6c vdi d6y d6n.
CAu 12: Hai didm M vi N gdn mQt ddng cliQn thEng dii. Khodng c6ch til M ddn di>ng rliQn
l(tn gdp hai ldn khoing cdch tr) N ddn gdng diQn. D0 l6n cfia cim rfng ril t4i M vi N li Bp1
vA Bp thi

Bn=lur

F.'Brvl = 28ru.

WBM =lo
4"N'

W*=48ru.

-

Cdu 13: . Dr)ng diQn I = I (A) chay rrong ddy ddn thSng dai. C6m rfng tr) tar diim M
d6y d6n l0 (crn) c6 d0 ldn Ia

c'Ach

ii,

Ez.to-o(T).

F)2.t0-r{{T)

pr

4.10-6 (T)

tr 4.lo-7 (T).

Cf,u 14: Tai t6m cfia mQt cldng dign trdn, cddng
(l'). Dudng kinh ctia ddng diQn dd la
\Ap

/

l0

Wzz

c:m

I

crn

,JO 5 (A) cfrrn itng rir dr:

cm

W,za cm
CAu 15: MQt ddy d5n thing mQt m{t ph8ng chrfa ddy ddn, ddi xrlng vdi nhau qua ddy. t
/E2o

ddng

?

fiCa^
p;na

f'ng

tt

tai M

vi

N bhng nhau.

vd N cl6u nim tr€n mQt drrdng srlc rtt.

p Cdm rlng tr) t4i M vi N c6 chi6u ngrtQc nhau.
pt CAm tlng rr} t4i M vi N c6 dO Itln bing nhau.

/'

CAu 16: M6t ddng diOn c6'cudng d0 I = 5 (A) chay trong mQt d6y d6n th8ng, dai. Crim
rlng
tr} rlo rlt)ng rliQn niy gdy ra tai didm M c6 rl0 ldn B 4.to'' (r). pidm M
ciich el6y m6r
=
khodng

)Q 25 (cm).

F,

I0 (cm).

ps (cm).
\ED 2,5 (cm).


Cflu L7: MOt dbng diEn chay trong ddy cl6n th8ng, dei. Tai didrn A cf ch df,y 10 (cm) c'dru
fng til clo dr)ng diQn edy ra c6 d0 ltln 2.10-s (T). C6 crrdng dq ddng dien ch4y tr6n dAy le

\oro
/
E

(A).

o (A).

,:.

I\

zo (A).

I

C6u I tt: MQt 6'ng d6y dei 50 (cm), crldng d0 dbng di€n chay qua m6i vbng dAy Ie 2 (A).
Cem fng ttr b€n trong drrg ddy c6 d0 l6n B = 25.1 0-4 (T). Sd vbng ddy cria 6'ng dAy le
be zsa.

lu

r
Cf,u lg

W4rg.
{

,

r

tsn320.

bOn

F

MQt sq,i d4y ddng

-

':' '

J'*

,_

, lrJp sdn cdch dien
. ""-' ,--i-..E'tt*;o','-;.r*1 ".*-.i), dai ;l

ngoli rdt m6ng. Dirng sgi ddy niy dd qudn mQt dng dav :
|
F
nr{
\
\ r- '. a.[--cuc,
V otnfl d tn q u 6-l* L it-l'rii.dr k. )o vong ddy tr€n m6i mdt chidu dei

')

*'

l,r\

t\

cua dng d6y Ie

:

h0 5oo

n'6a

r Eh 1125

r379

/

K/

Cflu 20: MQt sQi ddy ddng c6 dudng kinh 0.8 (mm), diQn trd R = 1,1 (CI), l6p sdn cdch diQn
I
{,
.(
\
7
h
r,V
{
r
i.-- - *i.-- r
^t.
^. dng ddy ;
Den ngoar rat
mong. Dirng sgi rIAy niy dd qudn m$t

-E .-.n .\€
'
*lvo*'-cho ddng cliQn chay qua dng clay thi

:. , Lrl* V*q .tfiu e,.il

Adt,
cim frng tir bdn trong dng Odyoc6 d0 ldn B =6,28.t0-'1f;.

HiEu dien th6'i] hai ddu dng d6y

H

frz,s (v)

(v)
1,4 (v)
,fu.

Yos

rry)
Wt
/

Cf,u 2lz MQt d6y ddn r{t clng thing, 3 gitra d6y dtrgc udn thinh vdng trdn biln kinh R = 6
(cm). Ddng diQn chay tr€n ddy c6 crrdng d0 4 (A). Cim fng til t4i t6m vdng trdn do ddng
diQn e|y ra c6 d0 Idn la
,3.10-sT

,$,9'ro-5r

CAu 222 Phdt bidu

nlo

B5,s'10-sT

sau ddy la kh0ng dring

?

W LUc tddng tdc gifra hai dbng di€n th8ng song
ph8n/ hai dbng diQn vi vu6ng g6c vdi hai ddng diQn,.
BrUai
/

ddng diQn song song cing chidu
;.

W,5.lo-sT

hft

song c6 phdclng

nlm ngang trong m{t

nhau, ngrrQc chidu ddy nhau.

gri ddng cliQn ngtfsc chidu hrit nhau, cing chi6u ddy nhau.
V.
/

'p,Lgc

ttlctng tdc gitta hai dbng di€n c6

clQ

ldn ti l€ thu6n v6i crrdng

c10

cria hai ddng

(Iren.

=

20(cm) c6 kh6'i luong 5 (g) treo nlm ngang bing hai sgi chi
mdnh CM vA DN. Thanh nXm trong tr) tnrdng cldu c6 cim rfng tfi B = 0,3 (T) nlm ngang
CAu 23: . Thanh IvIN dai I


,{
'r, I

,

.vu6ng g(>c vdi thanh c6 chi6u nhr, hinh ve. M5i sQi chi rreo rhanh ctdi da Ie 0,04 (N).'Ddng diQn chay qua rhanh MN c6 cudng d6 nh6 nhe't la bao nhieu rhi mQr
trong hai sQi chi treo thanh bi dft. cho gia tdc trong tnrdng g 9,g (rnls')
=

A. I = 0,36 (A) va c6 chidu til M ddn N
B. I = 0,36 (A) va c6 chidu til N ddn M
C. I

- A,52 (A) vn c6 chi6u til M ddn N

D. I*= 0,52 (A) va cb chidu

fi

N ddn M

'?

trdn bi{n kinh R = 10 (cm), gdm 50 vbng d6y c6 crbng diQn l0 (A)
chay qua, d4t tron! kh6ng khi. D0ldn cim tfng tr) t4i tdm khung d6y ld
= z.To-3 (T).
P B = 1,256. 1o-4 (T)
Cdra 24: MQt khun

g

d6'y

pa

W=3,r4.ttt-3(r).

En

=6,zl.to-'(r)

CAu 25: TU tnfdng tai clidm M do ddng AiC,Jtn,f nh6't gdy ra c6 vectd cim fng tr] B, , do
ctdng v(li nhau. D0 cdm fng tr} tdng

B:

Br

hc.,p

*Br.

trl
P B:Br -82.

drlgc xr{c dinh theo c6ng thfc
t

ii

,gB-Br-8,

\"/

+Bl

Ps-

.>

C6u 26: TLY tnlrlng tAi didm M do ddng diQn thf'nhfl't gdy ra c6 vectd cdm fng ttl S, , do
cl,rng ctien thrf hai gdy ra c6 vectd cdmitng til Br, hai vectd
E ,e 4.6 hrilng vudng g,5c
v(li nhau. Goc hgp bdi VCCId cim fing $r tdng hOp B vdi vecto q ta u cluqc tfnh theo cdng
thfc.

sttanfr
Ptancr

B,_

=

-

psin(r

B2

F'
Br

i

BI

=

COS Ct,

-

B
B2

B

Cdlo27: Hai ddy dhn thing dli vO h4n d4t song song ci{ch nhau l0 cm rrong khong khi,
dt)ng diQn ch4y qua hai ddy c6 cing dQ ldn 10 A, ctng chidu. Lgc tr) t6c clgng I€n mQt doan
dei 20 cm ctia m6i aay d6n li

)gtu.hritF=2.10'aN

FtlU.ctdyn=2.10'oN,

:

Cdu 28: C6 hai dhy d6n thing dii, song rorg *ung hai ddng diQn cing chi6u bri crrilng oQ blng nhau. M Ii trung aidrncria doan AB nhr, hinh vE. Chon phdt bidu dring:
Vectd cim fng til tdng hgp t4i M
Wvu6ng g6c vdi mAr ph8ng hinh v6 va hudng
ttr phia trdtlc ra phia sau m{r ph8r,g hinh ve
vudng g6c vdi mar ph8ng hinh v€ va hudng
I

tr) phia sau ra phia rrttdc mAr phSng hinh v6
A
ffong rn{t ph8ng hinh vE ve hrrdng til rrdi sang phei
F"hm

F


{rf,

pra,B,C sai
Ce uig: Chgn phr{t bidu sai

tsfai

dQ/'ISa

'\:._

cdc didm nhm tr6n

ctng

mQt tltrdng sfc

tt

ctia ddng clien thEng" cdm fng tir cti

bXng nhau

tr6n ctng mQt drrdng thSng song songgdi
ttng til c6 d0 t1ln bhng nhdu
F'tu i iacdidm nhm tr€n ctng mQt drrdng sfc tfi ctia ddng di€n trdn, c6m d'ng til a.
'd0
ldn bhng nhau
Tai cdc didm nhm b6n trong dng ddy mang dd.ng tti-Qnrc6m fng til c6 d0 ltln bBng
nhau
:

tr

CAu 30: C6 hai "d6y d6n thEng dii, song song mang hai rlo. g diQn cing chi6u. Ndu crrrlng
dQ ddng trong m6i aay ddu t[ng l6n g6'p + ldn thi lgc tr] t6c dUng l6n mQt don vi chi6u cua rnOi ddy se ffing
bfr ldn
t6 tAn
W+ ldn
Prztd,n

/

)6

R

DIEM

DEA
HQ VA TEI{

L6P 1I A,

4

10

tY-


ryrI

i

'

.lr
-.

ldt{v

,'jj'F*.'.-

,

BQ GrAO DUC VA DAOTAO

DT THI TRACNGHITM

Lf

rta0N vAr
n NANc cAo HKrr
Thdi
giatn
ldm bdi: 45 philt;
.
( J0 cda rdc nghism)

06 sii

+

1- Phdt bidu neo sau tl6y li kh6ng ddng?
til tdc dUng I€n ,n6t do.n diy din mang ddng di€n dit rrong rr}
vdicUdng d0 ddng di6n trong cloqn dAy
tsfrrc tr] tdc dung l€n rn0t doan diy din mang ddng di€n d4t trong til
vdi chidu'.deicria doan diy.
riic dung I€n rn6r doan ddy din mang ddng dien dat trong til
fii g6c hqp bdi doan ddy vi drrdng srtc tr].
p{Uc til tiic dung ldn mor do4n ddy df,n#mang ddng dif n dar rrong rir
hrrf,n vdi carn frng til B cfia rL/ rrddng

)S,Ir

f*$trU

trtldng diSu ti lq thua

n

tnJdng dd u ti Ie thua n
tA

trtJdng ddu ti le thui n

kudng ddu B ri le

l- Phrit bid-u nio sau diy li khdng dring ?
trong mit phang
@,r. tudng tdc gifra hai dbng alqn *,8ng song song c6 phuai ddng dj€n'va vudng gdc r'

ffiai ddng diQn sonEr song cr:ng ctridu hf t nhau, ngrrec chi6u da-y nhau
W), tudng ti{c gifra hai dbng diQn c6 d0 ldn ti l€ thuin v

ddng diQn ngu1,e chidu hrit nhau, cilng chi6u ddy nhau

i

)t({ai

- Phdt bidu neo sau diy li df ng? Cho mdt do4n diy ddn mang ddng di6n I ddt song song vdi
dr1dng
lc til,
cria ddng disn ngdgc chidu vdi chi€u
d,rdne s, JjL",i,
ra adi ctri6u ddng aier.,--'l
pfrJc tr} tdng khi tang ct/dng dQ ddng di€n
]9fUc tir girim khi tang crrdng dQ dong
"
, '. -. ..
FQU. til lu6n bhng khring khi tEng crrdng dQ ddng

rG,

tti

@u

diSn

dign

'i
.,, ,

,

Chgn phr{t bidr: saf
@14i cric didm nlm tr0n cilB m6t dudng thlng song song vtli ddng diQn thEng, c{m rlng trr
,d6 ldn bing nhau .
(D fai cdc didm nim tr[n c0ng
m6t dddng sri'c rr] cria ddng di6n tr6n, cim rlng tt c d6 ldn
ng nhau
@ fai cric didm nlm hCn trong dng diy mang ddng di€n. ci m tlng tir c6
dO l6n blng nhau. . .
@rai cdc didm nim tre n cr)ng mQt drrdng sfc tUcfia ddng aien t[lng, cim t?ng tir.o
oOien
ng nhau
r

r

1

r

-


hf hai"
dien thrl nh6't gf,y ra c6 vectd cim rlng tr}
Til tnrdng t4i di€m M do dirpg
1
-+
-{,
,')
tt:
B, vi B, c6
hrldng vudng g6c vdi nhau. COc ttild trdi
gty rac6 vecrd cim fng,U , hai vectct
--J
-,
B
vdi vecfo & ,U cr duoc tinh theo c6ng thrfc.
vectd cim (ng til tdng hqp
5-

83

Br

Br

B2

B

Af

n.,-Bl

tanct =

h6"sq$=

l.r.

Clu 6: MOt day d5n cxng ri't thlng, 6 giila diy duqc udn thinh
vdng trdn biin kinh R = 6 Ccm). D0ng di€n chay tr€n df,y c6
crrdng d0 4 (A). CAm rlng,'ttr tai tAm vdng trbn do ddng diQn giy
ra c6 clQ l6n

Ii

r_l

ffir,+@oFn-W
.' 1)
fl/ )
l-

4,s. lo"r T.

7- Hai diy dEn thing dii v6 hln dit song song ciich nhau l0 cm trongi kh6ng khi, ddng di$n ch4y qua
hai dny. c6 ctng d0 ldn l0 A. .1ng chi€:u. Lr/-c til t6c dlrng l€n mQt doan dei 20 cm cfia m5i aay din Ii

Huradvn=4.10'ss1

i"

,L:7 ]{lrrrhritF=4.10-5N

Cf,u 8: Thanh MN dei t = 20 (cm) c6 khdi lugng i0
(e) treo nlnn ngang beng hai sqi chi reinh CI\{ ve

DN. Thanh MN nhrn ngatrB, nhm trong til trUdng
ddu c6 cim rfng til B = 0.3 (T) vudng g6c vdi thanh
c6 chidu tS trong ra ngorri nhu hinh ve. M6i sdi chi
16o thanh cd thd chiu lu'c k€o (l{c cing )le bao
iihi6u (N)?,Bidt dbng diCn ch?y qua thanh MN cd
chidu til N ddn M va cti cudng dO I = 0.52 ( A )
Ctro gia tdc trgng tnrdng $

mQt ket

t

= l0 (mls?)

/tT\
l.r\/

,i

qui khdc

9- Ph$png,erta h/e LORENTZ
trtng vdi phu,ing cfia vectd ven tdc cfia h+t mang diQn
tr[rng vdi phuong c0a vectd cirn f'ng
ptrilng
vdi mit phing rlo bdi v{n tdc c0a het vi vectd cim f'ng tir
I7
pgu6ne g6c vdi m{t ptu.ing hdp bdi vectd vdn tdc cria hqt vi vectd cim rlng

tU

10- Mpt khung ddy trdn bin kinh R = l0 (cm), gdm :s0 vdng d6y c6 ddng di€n
trong kh6ng khi. DO ldn cim frngtU tp,r tdm khung
.,.

W".to{

tr).

daJF

X"

ro'5

rr). &

to''

(t).

Ar."
'-.r

lx

fl

''
,i
i ,'

1tu

i

it

./.

r

lOiA)

r : i;'"iI

chay ?ua,

t0'' ff).

diit

; -:-


S-

q

Til rffdng t4i didm M do AgrC dign thr? t$t gery c6 vectd cf,m fng fiI

sty

.mc6 vecrd

cim fng ,o

hai vecto 4

va 4c6

, do dbng tli€n tht? t

hrrdng vu6ng g6c vdi nt-rau.

5.
B vdi vecdb B' lA o dugc tinh theo c6ng thrlc.

vectc, cim rl.ng tU tdng hgp
/ &.
, -E-8,

ry$d
, t'.

',"l '1

IU, _

.;'

Bz

clng r{t thf,trg, 6 girta df,y dugc udn thinh
v0ng trdn biin kinh R = 6 ('bm). Dbng di€n chay tr€n ddy cd
cfdng d0 4 (A). Cim ri'ng-tff tei tflm vdng trbn do ddng di€n giy
Cf,u 6: MQt d6y d5n

ra c6 dd ldn Ie
2rg5.

7- Hai

fr,3.ro"5T.
diy dEn thing dii v6 h;r n dit

4,5. l0's T.

Itrs T.

song song ciich nhau l0 cm trong kh6ng khi, ddng di€n chay qua

Cf,u 8: Thanh MN dai i - 20 (cnr) c6 khdi lugng i 0
(g) r,rec nlnn ngang hlng hai sqi chi rminh CI\{ vi

DN. Thanh MN nhrn ngilng, nem trong til trUdng
ddu c6 cim rfng tr] B = 0.3 (T) vudng g6c vdi thanh
c6 chidu tfi trong ra ngoai nhu hinh vE. M6i sqi chi
tr6o thanh c6 thd chiu lqfc kdo (l{c cing )la bao
nhi6u (N)?.Bidt ding diCn ch?y qua thanh MN cd
chidu tt N ddn M vi cti curdng dO I = 0,52 ( A )
.

Ctro gia toc trgng tnfdng $

= l0 (mls?)

/I.I\
trr/

m$t ker qui khdc

9- Phvpngprta hle LORENTZ
Irirng vdi phucng cfia vecto viin tdc cfia h+t mang di€n
trfrng vdi phuong cfin vectd cirn fng
trirng vdi rnit phing tlo bdi v0n tdc cfia hat vi vectd cim trng tir
F
rvwlv v0n

vg.l tdc
yudng g6c vdi mflt ptu.ing
fvu vus
cria hqt vi vectd cim fng tir
rlvy bdi
vvr vectd
l,llarltE, hqp
\

10- MQt khung diy trdn bf n kinh R = t0 (cm), g6m
trong kh6ng khi. DO ldn cdm fingtU tpi tim khung

W".to''tr).

-s0

vdng

OqIF

X" ro-5(t).

z'

r

diy cri ddng aien l0tA)

& t0''o).

'i

.t'

"

chay g,ua, dA t

.,-

Ar.'.10'r(t).

1b
j'...'. -::.:::l-.-rr.:--..i:
.,l,Li'..,' ,.'
-. -;.' i .

-,iri-,li:::r,,i :-+r'-,, ,.-* *,,i1.-:,1 ,:r.:.-:j
..':.- i,:.i.:.',:., 1,, .,;"" ".....'.j..,1':-'',:.-"
I t
, , ri

'


&

.11- MOt diy d5n th8ng dii cri dbng diQn I ch4y qua. Hai didmdd
song vdi diy dfin. fcdt tuan niro sau tldy ln.kh6r!g drfing

?

,/,'

vi N nlm tr€n I itrrdng thlng song
j

nhau
XYrrtocim t?ng tr) tiri M vi N blng nhau
Wyto cim ring tr} t:1i tr1{.,gi N c6 cn]du ng@g nhau
}(a*

rlng tU r4i M r

ii

N c6 itQ ldn blng

S
V4

----

a"

;

..

,

o. '

.*b
I

12- Phr{t blS.r nno sau diiy la kh6ng rfiing?
pfarn,fng tr} li dai lrrrlng vectd

F
B=,/J-sina
phU thu$c vio cr/dng dQ
)$.rO ldn crjh clm r?ng tir drlQc xric dlnh theo c6ng thrlc

,/

AOnsti€;I vi chi€u dii ttoqn ddy

dEn

d4t'irong tU tnrdng

B=
rir
th,i'.
cfia
cim
rlng
dugc
xric

dlnh
theo
c6ng
kh6ng phu rhuQc
M1ldn
crldng aq"@ne di€n I vi chidu dii doan diy dfrn d{t trong til tnrdng.
ptarn rlng tr} li dai lrrtJng d{c tnrng cho tnldng vd m4t tric dgng h,fc

,*

vio

tt

f)

13- MQt Olectron bay vio kh6n.r gian c6 tir trudng ddu c6 cdrn rtng tU B = l0't (T) vdi vf n rdc ban diirl.ys =
3.2.106 (rn/s) vu6ng g6c vdi li. rndi lrrgng €lgcrron li 9,1.10'3r 1kgi. Biin kinh qu! dao cfiir €lectro,, rft tu
rrudng

li ,,

ffi,4(crn).

,,W i5,o (cnr).

[8,2 (cm].

(cm).

t
,1

a.t2-!ln.t'{"r'
14- M$t sgi dey ddng c6 drrilrrg kfnh 0.8 (mrn), Idp sdn cd ch di€n hen ngoai rat m6ng. Dfing sqri ffiy
ne;, dd quan m.t dng diy. Cri c vdng diy qudn siit nhau. Sd v0ng day tr€n m6i mdt chidu de i cria dng

day

Ii

irvi.;*.

fr,,

M2so

15- Tai tdm cfia rnQt ddng diC'rr trbn, cddng d9 5 (A)
t
r a
.l . A
, , r
cfia ddng dien d6 iA

, t!!,

',

nffisa

Jjl

cim frng tfi do dtloc Ie 3 I .4. l0-6 ff). Drrdng kfnh

r

ffi2ocm

#P6srn,W

';vi

F

et

dmcm%

',r;

16- Hai didrn IvI va N gdn mQt ddng dign thing dei. Kho{ng cdch tU N ddn ddng di$n Idn eep hai Idn
khod ng cii ch til M den dbng dien. D0 ldn cti a ci rn r?ng tir ta i MvANIeBy va Bru thi
1.'

B^, =

ffffi"=ZBp'

$#,'

sm'=ffi

d.,= P,

, :i ,-.

17- MOt ddng diSn chay tron.u diy din th8ng, dii. Tai Oidm A cdch ddy 50 (mm) cim r?ng tU do d6ng
tli6n giy ra c6 d9 ldn 2. tfs t't'1. C6 cJdng dQ ddng rtiQn chay tr€n df,y li

(lt1ntt.

fliel.

,ff6 tet.

$ormnr.

18- MQt doqn dey-din thing MN dai 3 (cm) c6 dbng dien I J (A) dqt trong tft trUdng ddu cd ciirn
=
ri'ng tif B = 0,5 (T). L{c til tiic dung t€n doan deyc6 dO ldn F= ?,5.t0'' (N), G6c s hqp
bdi df,y MN
ve dudng ci m ,?ng til Ia

ffi,s'.

gffin

ffiI,.

17

*r$

19- MQt sgi diy d6ng c6 drrdng kinh 0.8 (mm), tdp son cdch diQn b€n ngoii 161 m6ng.
Dirng sii Oiy
niy dd qu{n m$t dng dty. cric vbng diy qudn sdinhau. cho ddng diQn chgy qua 6ng diy thi cllm
rlng tfr b€n trong dng diy cri tt6 ldn B = g,21.t0-3 (r). Hi€u di€n rhe,d hai ddu'dne diy ljl.jV
. nOi
diQn trdf cria sgi diy niy t:ifrao nhi€u (O)?
l

fb,ezs1o1, gfi,.szarot fi,rrs (o)

cfu

JwoW

20: MOt dey d5n rhri ng

c6 d6ng dien dar
trong vDng khdng gian c(i til rnrdng ddu nhu
hinh ve (dtrdng sfc ri, ni'i rn rrong mir phfrng
hinh ve cd chidu hI drrtli hudng ICn, dbng
dign I vuong g6c ydi mar phdng hinh vE ve
di tir ngdai vio). LrJc ttr r;ic dung I€n df;y..co
_)

ll {

r/A*. hddng I€n
hrrOng ngang hUdng sang phei.
Udng

,1

phLrdng ngang

phrldng

i.ttii

21-Phdt bidu nio sau ddy ln ddng ?
Suang srlc tr] cia tri tnJdng giy rabdi ddng di6n thing
,
nim trong mqt phlng vu6ng e('rc vdi ddy din.

.. D?"-Urtssfctilcda
- ddng
vdi
diQn
(bdArgsric

huong sang trii i
vaf.' hudng xuong
a

dii li

tr] cria tir tnrdng gf,y ra bdi ddng di6n

tr] cfia

tim

Iti trrrdnggiyraifii ddngdi€nthlngdniin nhfirgdr/dngth8ngsongsong
thing

dA

cich diu nhau

(Ooangstlc

nhpng d';dng rrdn ddiig

i Ie nhrng drrdng trrdng song song

tt] trrrdng gl,y rabEi ddng di€n thing dii le nhflng dudng rrdn

22'Cd hai ddy dEn thtng di i. song song mang hai ddng diQn cing chidu. Ndu crldng dQ ddng rrong
m6i Aay ddu tang l6n gip + lin vi khoring ciich girra 2 d|y din cring Hng len gdp Ziti tU. tr]
tdc
dung l€n-rnQt don vi chidu di kfia.mOi aa,v .sE tdng

fb$.".

dzran:w*- Cora,Sm J+ r,an%

&

23'MQt ddng di6n c6 cudng dQ I = 5 (A) ch4y trong mQt diy d5n thlng, dei. Cim fng ril do
ddng
di6n nnlrgAy ra tai aie'm M cti d6 l6n B = 4.10 s (!1. Oldm M ciich d6y m6t khoiing

G2sGm)

!.s 1cm,)*

25s,"T]

a.si*+.

24'Lrlc Lorenxd tric dung l€n trr t electron chuydn d6ng trong tU rnrdng aC, ftuOi vfln
mf t phing hinh vE vi phtldng .clridu nhu hinh vE)
g'
e eJ,-----+

rdc

I?B-, Tnirn trong
Ii;r:rU a

,,;,ffi

_.W

)4f *citddu sai.
Lorenxd narn tnrng met phing hinh
Lorenxd vu6ng p(ic vdi"ma t phi ng ;:,1n,1#,fu1ll;';;
,,6{.,1Ic

$f-U.

rinh

*€

vdi mflt phfrng hinh ve ve hrrrlng tr} phia

'hilng hinh vd

,i'r:,: :.j*'i.: :

, '.' ' ,,ri,ij.:,1,i'"iiiit,'+f;lii,*t*:,ii;ij:j:+.;
r
..1;.:r1,.,r..,,,.
*.1,_, ; :. ,, :

.i..-. .r rr.;!,i.,,. -.:.,..:....*;.r;;r.*,,s16;,r;,,

;i?: I}fu

-;-;,

.-:

rt

phra sau ma,

p&

sau ra phia rrudc m{t

t,


.r t'
,'ri'*

r

z;-Mqt dng dfly dei
rrons

rwic6

50 (cm ). ctdng d0 ddng dign chay qua m6i vbng
d0 ldn B = 16. l0-4(T). Sd vdng diy cfia dng df,y
r In

rtrc.

b+g,

r"

26. MOt dtectron bay vio khdrrg gian co tr} tn/dng ddu c6 cim tng

z rc'

tfr):[

ffi f.H

:'' iffi ;:,;::ft]: "'#i:,lt,

diy

ffiso.

tiJ B = O.2

:',"'ii.'",.

"'

Ie 2

(A). Cirn rl'ng tr} b€n

s

(T) vdi v$n tdc ban ddu

v6

=
,la

fr2

1;,

1

s
6

N

s:

f

)

a

a
.l

2l-Ttttrudng t4i didm M do sopg song ngUqc chi6u , Ir = 12 vi M li trung didm cria
giy ra c6 vectd cim fng,tir tt'
khodng cdch girta 1,,I:.

#B=

. ,,r, I,,Iz

DO crirn rlng til tdng tigp drrqc xric dinh theo cdng

Bi+Bl

#B=8,

thfc

+B--

#ffiB-8,-8,

=Q

diy din thing dii song song, gdn nhau , cDng nlm trong mlt phing hinh v€, rnang dbng
dier Is = I: =I.r - I vi chi6u nhd hinh v€ . Biet 11, Il cd-dilh Iic6 tnd dlch chuydn drrqc ve d6y
dgng cria h,rctB tdng hop SE.
cii ch da y r, ra u , diy Iq ciich rl:iy I; li a . nai a$@lc
28- cho 3

11

t-J
t1
cr|
Iu
I

,,

lich chuydn ra phirr sau mit phlng hinh vd
chuydn ra phia trr/dc mit phing hinh vel
6ict, ctruydn I4i gAn l2trong mat phing hinh v€
{ich chufdn ra xa I2trong m{t phing hinh v€
$,ich

29- MOt do4n ddy din dii ltrn) ddt trong tr} tnldng ddu vi vu6ng g6c vdi vectd cim ring lil. Ddng
diQn ch4y qua diy c6 cddng rl0 0,75 (A). Lrrc tr} tiic dung l€n doan d6y d6 Ia 3.10.2 (N). Cdm rlng tir
cfia til trUdns dd c6 dd ldn lir :

ffi02(r)
Cf,u 30: C6 hai diy d5n thing dei, song song mang hai
ddng di€n c&ng chidu c(i cr/dng d0 bing nhau. M Ie trung
didm cfia doqn AB nhu hinh ve. Chqn phdt'bidu df ng:
Vectd cim rfng til tdng hgp t?i M
Tdt ci ddu

"/
!i

-'.|!-

d4 r,
AI
\-/ l---o
t.r,>--

A

....t " B

tt

a

sa I

u6ng g6c vV6 i mA r I'hfr ng hinh v e va hrrdng til phia sau ra phia trddc ma t phi ng hinh
p'yu6ng !6c vvOi
r6 i m6t i,hin! hinh vvE
E vi httdng rU phia rrt dc ra phia sau mAt phing hinh
long rnEtphfrr,g hi,r"fr ue vi hudng tir triii sang phiii

flrem

ve
ve:

-.f

a

lr