ĐỀ KIỂM TRA 1 TIẾT HKII NĂM HỌC CHƯA XÁC ĐỊNH 1 (11 NC)

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KIEM TRA

45'BAI

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HK

II

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chdi d0ng dien rrong qh

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16 trdng ,gg.gc chi6u dien rrtrt]ngr'

16 trdng cDn

g

chidu di€n rrurirng

theo chidu cliQn trtrilng

vi

16 trdng

trdng theo chidu diQn tn/ttng

vi

Olectron

ngdqrc chi6u cliQn trufdng

plodng

chuydn

ddi

c6 hudng

ctia

c6c 16

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nguQc chidu diQn trdr)ng

Ce u 2: Chon c6u 'trrt lt)i

dfing

,,u

W!Elecuon

rd vd 16 trdng ddu chuydn ctQng ngugc chi6u diQn tnrdng

EEl".tr,rn

rr/

vi

16 trdng ddu mang diQn tich 6m

,&*a,

cIQ cdc h4t

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

tii

cli€n hdu nhrr kh6ng thay ddi nhiQt dQ

tlng

CAu 3: Ch<.rn phdt bidu

dring

o

@Cf,ft

b{n ct6n loai n nhi6m diQn'Am sdh4t Clecrron ril clo nhi6u hcrn ciic: 16 trdng

re7Khi

nhiQt

cing

cao rhi chdi br{n d5n nhidm diQn cdng ltln

.'

PKhi

m6c phdn cdc ngtrQc vdo l<lp tidrtp xric p-n thi c1i6n trrfdng

ngoli

r-'ri r:ir: rlrrr:g

tlng

f:rrilng srr khudch

tiin

crta c6,.c hat cO

b6n

l

PDdng

cliQn thu{n

ri

ddng khudch t6n cria c6c h4t ccl b6n;

Ced 4.:Ph/atbidu

nio

sau d6y

li

khOng dring?

FCa*

fng

til

li

clai lu-o ng d{c tnrng cho rr} tnrdng vd mdt t6c dgng lrrc.

F

UU ltln cfia c6m rfng

tfi

drrqc xdc ttinh theo c6ng thfic B

=nk

phs thu6c

vio

ctrdng dQ dOng rtiQn I

vi

chi6u

dii

doan d6y d6n ddt

tr}

trudng

FrO

t

ltln cria

cim

r?ng

til

dugc xr{c dinh theo c6ng

rhfc

B

"

=

-

_.l

kh6ng phu thuQc

I.l.rrro

vio

crrdng dQ ddng diQn I

vi

chi6u

dii

do4n d6y ddn

d{t

trong

tir

rrldng

pCa*

rfng ril

Ii

dai lrrgng vecrd Ceu 5! phdt bidu

nio

sau aay la kh6ng dring?

Yl-Vc

til

tiic dung I6n mQt doan d6y d6n mang ddng rliQn clar rrong

til

trurlng ddu ri l0 thudn vdi crrdng dQ ddng diQn rrong do4n d6y

,Ftnt

til.tdc dung l6n mOt doan d6y d5n mang ddng clign dat rrong

tu

tnlrlng ddu

ti

l0 thd{n vdi chi6u

dii

ctia doan d6y "

5

trdtfig

ddu ti

it'tL

triftJng ddu

ti

Wo

mQt

doln

d6y d6n mang ddng di€n

I

d{t

song song

vdi

drrdng

sfc

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

+'q*&h

,[)l-ryc

til

lu6n bXhg khdng tdng crrdng dQ ddng diQn

'pL,r

til

Ungkhi

tlng

cudng

dQ ddng tliQn

/

'i

tU, chidu ctia

i

'\gflyc

ttr girim tdng cudng <10 ddng diQn

r -?- ' o -e -i c,

Pl-qrc

tir adi ctridu ta Adi chidu ddng ctiQn

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)

F3,o

(T)

#

r$r).g

(T)

o

Fpl.Z

(T)

l'/

Ceu 8:

Phdt

bidu

nio

sau ddy le khOng

ddn*

$f,-rfc

tir tiic dqng l€n mQt do4n

dty

d6n mang dbng diQn dat

til

t-lq thu{n vdi g6c hqlp bdi do4n ddy

vi

drrdng srfc tU

X

Lr,rc

til

tric dgng 16n mQt doan ddy d6n mang ddng cli€n cl+t

tron! tif

l0 thufld

vtli

cdm rlng

tr}

cl{t doqn ddy

C0u 6: Phr{t bidu

nio

sau cl6y ln drfing

?

S

\r,

IvIOt do4n ctdy cl6n th8ng mang dbng dien

I d{t

)q},

I{c

tif tiic clqng l€n rnei phdn ctia do4n dAy

trong

tr}

trdc'Ing ddu thi

E

tU tir chi t6c dung

vio

trung didm cria rlo4n dAy

I

PfU

til

chi t6c dgng do4n ddy kh6ng soi'rg song vdi drrdng sr?c til

E

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

/

C6u'9:

MQt doan ddy d6n thfng

MN

dei (crn) c6 ddng cli€n

I

= 5

(A)

d{t

trong

til

trut'rng

ddu c(r c6m ri'ng tr)

B

=

0,5 (T) LUc tir tdc dgng

l6n

clo4n d6y c6 d0 ldn F

=

'7

,5.10'2 (N) G(rc cr hrlp

bili

ddy

MN

vi

dddng

cim

r?ng

til

li

Cu hinh

X

0,s"

F.t

"

F.uo"

Frn"

10: MQt ddy d5n

thfirg

c6 ddng tliQn dat

vthg

khdng gian c6

tr)

tnldng ddu nhu

vC LUc

til

tdc dUng l6n ddy c6

)6}

phtrcrng ngang hudng sang

ttdi

F

phudng

rgulg

litldng sang Phei

p

phddng *l+Ing

dfng

hddng l6n

le

XD phddngthhng clfng hrrdng xudng

/

11: Phrit bidu

nio

sau d6y la df ng ?

;1

Y0Dtrdns srlc tr} ciia

tr)

trrrilng gdy 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 br3i ddng diQn

thLngafi

ra nhtrng <trrirng thrtng

song Jong ciich ddu

p:Orrcfng

srlc

tilctia

til

tntdng

gdy 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

F.'Brvl = 28ru

W*=48ru.

Bn=lur

Ez.to-o(T).

tr

4.lo-7 (T)

trdn, cddng

,JO

5

(A)

cfrrn itng rir dr:

=lo

4"N'

-ddn thSng dai C6m rfng tr)

Wzz

cm I

W,za

cm

WBM

Cdu 13: Dr)ng diQn

I

=

I

(A)

chay rrong ddy d6y d6n

l0

(crn) c6 d0 ldn

Ia

ii,

F)2.t0-r{{T)

pr

4.10-6 (T)

Cf,u 14: Tai t6m cfia mQt cldng dign

(l')

Dudng kinh ctia ddng diQn dd la \Ap

l0

c:m

/

/E2o

crn

CAu 15: MQt ddy d5n

thing

<tAi c6 ddng di€n

I

chay qua Hai didm

M

vi

N

nlm

rrcng cDng

mQt

m{t

ph8ng chrfa ddy ddn, ddi xrlng

vdi

nhau qua ddy t<Ct tu4n

nio

sau d6y

ln

XnOrg ddng ?

fiCa^

f'ng

tt

tai

M

vi

N bhng

p;na

vd N cl6u

nim

tr€n mQt drrdng srlc rtt

p

Cdm rlng tr) t4i

M

vi

N c6 chi6u ngrtQc

/'

pt

CAm tlng rr} t4i

M

vi

N c6 dO Itln

bing

nhau

CAu

16:

M6t ddng diOn c6'cudng d0

I

= (A) chay 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

ps

(cm)

tar

diim

M

c'Ach

)Q

25 (cm)

Cflu

L7: MOt dbng diEn

fng

til

clo dr)ng diQn edy

\oro

(A)

/

E

zo (A)

I

C6u

I tt: MQt 6'ng d6y

dei

50 (cm), Cem

fng

ttr b€n drrg ddy c6 d0

chay ddy cl6n th8ng, dei Tai c6 d0 ltln 2.10-s (T) C6 crrdng dq

didrn

A

cf ch

df,y

10 (cm) c'dru

ddng dien ch4y tr6n dAy le

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

".*-.i), dai ;l ddy tr€n m6i mdt chidu dei o (A)

I\ ,:

crldng d0 dbng di€n chay qua

m6i

vbng dAy Ie

2

(A)

l6n B

=

25.1 0-4 (T) Sd vbng ddy cria 6'ng dAy le

be zsa

lu

,

tsn320.

r

Cf,u

lg

MQt sq,i d4y ddng bOn

ngoli

rdt m6ng Dirng

F |

-\

r-

'

a.[ cuc, V otnfl

') *' l,r\ t\

cua dng d6y Ie :

h0

5oo /

r Eh 1125

K/

W4rg.

{

r

F J'* ,_

sgi ddy

niy

dd qudn mQt dng d

tn

q u

6-l* L it-l'rii.dr

k

n'6a

r379

- ':' '

dav

:

nr{ \

)o

vong

Yos

(v)

,fu 1,4

(v)

Cf,u

2lz

MQt d6y (cm) Ddng diQn

diQn

e|y

ra c6 d0

ddn

r{t

clng

chay tr€n ddy Idn la

Cflu 20: MQt sQi ddy ddng c6 dudng kinh 0.8 (mm), diQn trd R

=

1,1 (CI), l6p sdn cdch diQn

^t h {, r,V { ^ .( r r \ I

Den ngoar rat mong Dirng sgi rIAy

niy

dd qudn m$t dng

ddy

;

i.

-

-

*i.

-E -.n \€

'

: , Lrl* V*q

.tfiu

e,.il

Adt,

*lvo*'-cho

ddng cliQn chay qua dng clay thi

cim

frng

tir

bdn dng Odyoc6 d0 ldn B

=6,28.t0-'1f;

HiEu dien th6'i] hai ddu dng d6y H

frz,s

(v)

Wt

rry)

/

thing,

3

gitra d6y dtrgc udn

thinh

vdng trdn biln kinh R = 6 c6 crrdng d0

(A)

Cim fng til

t4i

t6m vdng trdn ddng

,3.10-sT

,$,9'ro-5r

B5,s'10-sT

W,5.lo-sT

CAu 222 Phdt bidu

nlo

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

hft

nhau, ngrrQc chidu ddy

;

V

gri

ddng cliQn ngtfsc chidu hrit nhau,

cing

chi6u ddy

/

'p,Lgc

ttlctng tdc gitta hai dbng di€n c6 clQ ldn

ti

l€

thu6n

v6i

crrdng c10 cria hai ddng

(Iren

,{

'r, I

,

.vu6ng g(>c

vdi

thanh c6 chi6u nhr, hinh ve

M5i

sQi chi rreo rhanh c<i thd chiu dutrc luc k6o

tdi 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 bi

dft

cho gia tdc 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) c6 chi6u til M ddn N D I*= 0,52 (A) va cb chidu

fi

N ddn M

Cdra 24: MQt khun

g

d6'y trdn bi{n kinh R

=

10 (cm), gdm 50 vbng d6y chay qua, d4t

tron!

kh6ng

D0ldn cim

tfng tr) t4i tdm khung d6y ld

pa

= z.To-3 (T)

P

B

=

1,256 1o-4 (T)

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 c6 vectd

cim

fng tr]

B, ,

ctdng <lien

thf

hai gdy c6 vectd c6m rfng

til

4,

hai vectd

q

,a

B, c6 hrrtlng vuOng g6c

v(li D0 cdm

fng

tr} tdng hc.,p drlgc xr{c dinh theo c6ng

thfc

trl

B:

Br

*Br.

t

ii

,gB-Br-8,

\"/

'?

c6 crbng diQn

l0

(A)

.>

P

B:Br

-82.

Ps-C6u

26: TLY tnlrlng tAi

cl,rng ctien thrf hai gdy v(li Goc hgp bdi

thfc

sttanfr

=

B,_ B2

F'

Br

psin(r

=

Ptancr

-Cdlo27: Hai ddy dhn

thing

dli

vO h4n d4t song song ci{ch

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 phia sau m{r ph8r,g hinh ve

F

vudng g6c vdi mar ph8ng hinh v€ va hudng

tr) phia sau phia rrttdc mAr phSng hinh v6 didm

ra c6

VCCId

M

do ddng diQn

thf'nhfl't

gdy c6 vectd cdm

fng

ttl

S, , do

vectd cdmitng

til

Br,

hai vectd

E

,e

4.6

hrilng

vudng g,5c

cim

fing $r tdng hOp

B

vdi

vecto

q

ta

u

cluqc tfnh theo cdng

i COS Ct,

-BI

B

B2

B

I

A

+Bl

{rf,

pra,B,C

sai

Ce

uig:

Chgn phr{t bidu sai

tsfai

cdc didm nhm

dQ/'ISa bXng

ttng

til

c6 d0 t1ln bhng nhdu

F'tu

i

iacdidm

nhm

'd0

ldn bhng

nhau

:

tr

Tai

cdc didm nhm

'\:._

tr6n

ctng

mQt tltrdng sfc

tt

ctia ddng clien thEng" cdm

fng

tir cti tr6n

ctng

mQt drrdng thSng song songgdi <ldng diQn

thing,

cd,m

tr€n

ctng

mQt drrdng sfc tfi ctia ddng di€n trdn, c6m d'ng

til

a

b6n dng ddy mang dd.ng tti-Qnrc6m

fng

til c6 d0 ltln bBng

R

DIEM

4

tY-CAu 30: C6 hai "d6y d6n thEng

dii,

song song mang

hai

rlo g diQn

cing

chi6u Ndu crrrlng dQ ddng m6i aay ddu

t[ng

l6n g6'p + ldn thi lgc tr] t6c dUng l6n mQt don

vi

chi6u <lii cua rnOi ddy se ffing

W+

ldn

/

)6

t6

tAn

bfr

ldn

Prztd,n

DEA

HQ

VA

L6P

1I

TEI{

A,