A.dbng CiQn t6ng nhanh.[r]
(1)@-;nlo, a$oa, r,G dtntGffi;fiG;T fii';E;hiii n]m troKg moi'turitrfng co-ctridJlu'
ctlrdi l6n rhi l{c ttr c6 chidu
A.tff tri{i sang ph6i
C tU tr6n xudng dudi
C.25N
B tir rong 6 Lu ra ngobi rr6\,rcEr
{\
D trl ngohi vlo trong
Cdu Z:MQI dng diy c6 clQ tUcdm I-=0,5H ,n6ng lfc.,ng tich lu! trong dng ct6y ln l00J .Ddng rliQn qua dng ddy c5 crldng dQ :
,d I=2A, 6.1 = Q2A C 20A D 200A
CGu S:Mlt ddng di$n ch4y d0y tt6n thing clli Tai Oidm e cr{ch ddy l0cm cAm rlng tir dbng
tlQldn 2.10-s T.Crrdng dQ ddng diQn ch4y tr€n diy td :
olgn gay co I
A IOA , 8., 2OA C 3OA D.5OA
Cfru4:Trongm$tmachdiQnd0tgcfrm L=0,3'II c6ddngttiQntflng ddutil Ir=0,taddnI:=0,2A
trong khorf,ng thdi gian 0,1 phtit .Sudt diQn d0ng tU c6m trong mach c6 d6 ldn
.A.0,3V 8.5.10-3V c 3v D 5.10-3v
Cdu 5: I'{du cuimg d0 rldng diQn dAy trdn titng}ldn vi iltfitng kinh ddy tdng} Hn thi cfrm rfng tir tai t6m vbng ddy
A kh6ng d& B rang + tdn' C rdng ldn D gi6m tdn
Cdu 6: Bidu thrlc nio sau cl6y dnng dd tinh ning h/rJ ng cuQn cf,m
A.w=Ll zz2irzi B.w=LLo c.w=L D.w=L
Cdu : MQt do4n dny dni I cti ddng diQn cr]irng rl0 I clAt tir trddng ddu c6 c6m fng dr E hgp vdi
7 mQt g6c a .tr-qrc tir tdc l6n doan ddy bhng kh6ng khi :
A.a=300 B.a=900 C.a=600 D.a=l80o
C&w 8:Phuong cfra h/c til tiic clung l€n ddy d6n mang ddng rliQn lehilng cti d4c didrn nio sau dAy ?
A.Vu6ng g5e vdi df;y d6n mang ddng <liQn B.Vudng g6c vdi vectd cdm ritrg tir. C Vu0ng gdc vdi rn{t phfng chfa vectcl cdrn fng til vi ddng diQn
D Song song vdi dddng srlc tit
Cdrc 9:D0ng diQn I= I.{ chay ddy ctdn thEng dii .Cdm fng ttrt4i didrn M cdch dhy d6n tOcm cO
d0 ldn [h :
A" z.tro'*G') 8.4.tr0-6(T) c" 2 10-('ffi') D.4 1o-?(T)
Cfru l0: MQt di$n tich chuydn d$ng trdn ddu dudi tdc dgng cria lgc tr-o-ren-xo.Khi vf;n tdc cda diQn rich
vh dQ ldn cfia e6rn 8ng tt ting 2 ldn thi brin kinh qu! dao cira dQn rich
,{;tIng 4 tdn ts kh6ng rldi C t6ng 2Hn D girim 2tdn
Cdu nX: MOt diQn tich 10-6C bay vdi v{n tdc lOam/s xi6n gtic 30(}so vdi ciic tludng srlc tff vho n'rdt td
trddng cldu c6 d0 ldn 0,5T' EO ldn l{c Lo-ren-xcr tr{c dung l€n di€n rich li :
(2)C&st fi.2:lfiQr dbng di6n ch4y rrong m6r dAy ffidn i0 vbng drt'dng kinh Z$cm vdi cddng dq 10^A thl efimi
6ng tUtai t6m cdc vdng d6Y ln :
A" 0,2.nwT B A\nS-ff C.0,2mT
Qdw-13:r{5y chgn cum tr} dd nn6 tddqi }uong +-9
^t A.Luqmg til th6ng qua diQn tich S
g.fdc 00 Uidn thi€n tU th6ng
C Sut't tliQn r|One cf,m fng ,
D .DO thay tldi dr th6ng
C&u l4:MQr vdng ddy trbn bdn kinh 20cm .Crrdng clQ clirng cliQn ddy ln 0,2A.Cdm fing tiltqi tarn
cria vbng diy c6 gi6 tri
o u"ri.io 1D " - ' B 12,56.10 ''(r) " c 6,28.10-'(T) D' t2,56'toag)
C&u lS:MQr khung dfiy <tign tich 5cm2 gdm 50v0ng day Eqt khung dly trong tir tnrdng d€u c6 cdm
,:r* rU e oa quu! khung diy theo mgi hrrdng TUrh6ng qua khung ddy c5 gi6 tri cqrc dqi la 5.10'3wb
.Cim rlng tU ts c6 girf, tri li :
A.0,2T8.0,02TC.2,5TD'Mqtgi6trikhric
C6w I6:MQr khung d6y d6n cd 100 vt)ng .DiQn tich gitli h4n bdi m6i vdng diy li 100cmz Khung d4t
,*ng ,U tnt'dng ttdu c6c6c rtrtdng cim rfng til vrr6ng gdc vtli mflt phf,ng crla khung , d0 ltln c8a cim #ng
tii B =0"2T.Tt th6ng qua khung c6 gi6 tr! : *
A.0,twb B.zWb c 0,2wb D.20Wb
'iai'ii:2p7rOt
dng <iiy dii 20cm c6 I200 vdng diy .Tt tr'./ilng lbng dng dty c6 d'0 l6n 7,5.10'3T' Cudng riQ dbng di$n chay 6ng d6y lir :
A .0,24 B 0,4 A C O,5A D 1A
Cdw IB:F{ai d6y dfin thfrng dii ,song song c6ch nhad lOcrn Ddng diOn chAy qua hai ddy ngrt'Qc chi6u ,e&ng eddmg dQ XCA.Ctlm fng tff r4i didm c;{ch ddu ha! cIfiy doan 5crrye cd d0 ndn
A 2 L 0-sT' 8.4 1O-sT C.8 TL}-sT D O T
*/di v6n rdc tr 0sm/s vuOng gdc vdi dudng sfe [S trMdmg Cfrelf:lvn$t eliQsr tfeh ed d0 ldn 10 7-uC bay
ddu c6 d0ldn cdm rrng fibhng lT' .80 ldn h/c tr-o-ren -xd tdc dgng i6n di€n tich ih
A u{ E i04N C.0,lN D loN
W:Phdt bidu slaro sau day [h safi? SuA't diQn clQng cdm frng c6 gid tri ldn khi
A.dbng CiQn t6ng nhanh B.dbng diqn gi6m nhanh C.dbng diQn c6 gid tr[ ldn
D.dbng dien bidn thien nh.anh
cee821 Fh6t bidu nlio sau ddy ld kta6ffi8 dfing
TU tnrdng ddu tra $r mudng c6
A.ede d$dng sffc song song vh cdch ddu nhau B.cim ufng tif tai mgi ndi ddu bhng
W: I-/tOt dng dfly thf,ng dAi cd d0 tU ciin :
d*g d6y NAng ldqng fi tlftlrrg tAp trung trong
A.IJ B O,i J c or2.[
Q.eeGL: lMQt day dfin rtrtng c6 ddng diQn I clat
tff ti{c dqng trCIn df,y cd :
D.0,UZnnqT
f'\ts.'
,7
C.lgc rtl tiic ciUng l6n ci{c dbng diQn nhd 6
D.cdc dac didm PhUdng i{n A va ts
f= l00nrH .Cho clbrig kh6ng ddi edting dQ n=zA chBy Eua
t\ n2 t4 l\
lbng 6ng dfiY Ia :
D.2J
(3)i
A .Pht/dmg ngang nueflng sang triil !
B.Ptufting ngang trddng sang phdi
C Phtfdng ilr&ng dfrng hddng l6n
D,Phudmg th8ng dfng hddng xudng
C6u 24 M0t dng d6y c6 dQ tqr cfrm 0,4H ,trong khoing thdi gian 0,04s suatdien dQng tq, cfrm xuf,'t hiQn
trong dng dny h 50V OO Uidn thi6n cutlng dQ ddng khoing thdi gian d6 li :
A Ai=51 B Ai =0,5A C' Ai =0,05'4' D' Ai=50A
C&u ZS:Trmphrit tiidu'sai vd cfrm rlng tu cria tir trtrdng cto dbng iliQn ch4y vdng diy troi gdy tqi
tf;m:
A FhU thu$c viro vi tri didm m x6[
C PhU thuQc vlo bi{n kinh vbng dAY
mQt nam chflm tfrfrng MN c6 chi6u nhrl hinh vE KCt lufln nio drldi ddy dfng ?
ts M lI crJc bdc
D.Khdng rhd kdt lu6n drrqc
&,
C&w ZZ:MQ1 ddng diQn th6ng dii vd h4n [ =l0A trong khdng khi .Cdm rlng til do n6 g0y t4i didrn M cr{ch ctbng di@n 5cm bEng
n s.ro''ir1- n'.+.to-tg) c z.to-51r) D' lo's(t) k
C6w ZE: h40r hinh vu6ng c6 canh 5cm d4t rrong tU rrudnj ddu c6 cdrn rfng tU E= 4.10*"f 'Til th6ng
qua hinh vu6ng oo uhng ro-6wb Gdc hdp bdi vecto cim rlng tir vdi phdp ruydn cria hintr vudng dd lh:
a got' tr*.ot' c 3ot' P 6ot'
C6.ss Zg:Tai r6m cria dbng diQn tron cddng dO 5A .Cf,m fng tff dutlc le 31,4.10-oT' 'Budng kinh e &a
ddng diQn d6 lh :
A, l0cm E 20em C" 22crn D" 26cm
.A
s"+
B FhU thuQc vio cddng d0 dbng diQn
D DO ldn lu6n bhng 2n.10-'+ ndu d4t ffong khong khf
fr'
C-&s,e 26: Dtfdng sffc eua
A, N [h c{c nam
C, N [e, cdc bdc
A.ci<0
C FIa't ehuydn dQng vu0nll goc vdi E
B, F[+t chuydn d$ng eung PhUdng
D, C6 tra trtldng hgP trCIn
r+Er
C&w30; Cho mQt hat mang cliQn tfch q chuydndn dQng tif trdilng d0uCIu B T'rddng hgp tliro sau e1fiY
q{Sfgt
Y\.7.o \,,41\-, r5!\ E r.6e s.*"E) -'Y - l
hAt sd kk6wg e hiu t6c dqng ciia l{c Lt>-ren-xd 'J