Chiphunzitso ndi njira yothetsera mphamvu ya maginito yomwe imagwira ntchito pa kondakitala wowongoka ndi zitsanzo zowonetsera komanso zolimbitsa thupi.
ctv91neg.com80 Zaka 3 zapitazo 70917 mawonedwe | Physics 11
Chiphunzitso ndi njira yothetsera mphamvu ya maginito yomwe imagwira ntchito pa kondakitala wowongoka ndi zitsanzo zowonetsera komanso zolimbitsa thupi.
Mphamvu ya maginito ikugwira ntchito pa WINDOW LINE
A) Chiphunzitso ndi njira yothetsera:
–Mphamvu yamagetsi $\overrightarrow{F}$ ili ndi mawonekedwe:
Mfundo yoyikidwa pakatikati pa gawo lapano.
Mukuwona: Mayendedwe a mphamvu ya maginito ikugwira ntchito pa chingwe cha waya
+ Pali njira yolowera ku $\overrightarrow{I}$ ndi $\overrightarrow{B}$, yomwe mayendedwe ake amamvera lamulo lamanzere.
+ Kukula: $F=BIl\sin \alpha $ (pomwe $\alpha $ ndi ngodya yopangidwa ndi $\overrightarrow{I}$ ndi $\overrightarrow{B}$).
Kumene: B ndiye maginito induction (gawo ndi Tesla – T)
Ndine wapano (A)
$l$ ndi kutalika kwa chingwe (m)
$\alpha $ ndi ngodya yopangidwa ndi mayendedwe a maginito induction vector ndi komwe kuli pano.
–Lamulo la kumanzere: Ikani dzanja lamanzere kufalikira, kotero kuti kanjedza ilandire mizere ya maginito, njira yochokera ku dzanja kupita ku zala zapakati zimasonyeza komwe kuli komweko, ndiye chala chachikulu chimasonyeza njira ya mphamvu $ 90 ^ {0}$ kuchokera .
–Makhalidwe a mzere: Kodi mabwalo centric ali mu ndege perpendicular kondakitala ndi pakati pa mphambano ya ndege ndi kondakitala.
+ Kukula: $B={{2.10}^{-7}}.\frac{I}{r}$
Chenjerani:
+ Mayendedwe olowera kuchokera kunja kwa maginito ndi Kumwera (S) kupita Kumpoto (N).
+ Msonkhano:
$\odot $: Pali njira yolunjika ku ndege yoyimira, njira yopita kunja.
$\otimes $: Pali njira yolowera ndege yoyimira, njira yolowera.
$\to $: Pali chiwongolero, chiwongolero ndi njira ya muvi ndikugona pa ndege kuti ijambule.
Chitsanzo 1: Mphamvu ya maginito yomwe imagwira ntchito pawaya wowongoka wonyamula madzi amafanana ndi:
A. madzi kudzera mu waya.
B. muzu wapakati wa kusiyana komwe kungathe pakati pa malekezero awiri a waya.
C. masikweya a kuthekera kwa kusiyana pakati pa malekezero awiri a waya.
D. kukana kwa waya.
Langizani:
Mphamvu ya maginito yomwe imagwira pa chingwe chowongoka cha waya imadalira kukula kwa magetsi kudzera mu waya.
Sankhani yankho A.
Chitsanzo 2: Mu yunifolomu maginito B = 0.2T, kondakitala 20cm yaitali amanyamula panopa I. Zimadziwika kuti ngati waya aikidwa perpendicular kwa maginito, kulemera kwa waya P = 0, 4N adzakhala ofanana. ku mphamvu ya maginito yomwe ikugwira ntchito pa chingwe. Mtengo wa I ndi wofanana ndi:
A.10A B.5A C.1A D.20A
Langizani:
Kulemera kwa waya P = 0.4N kudzayenderana ndi mphamvu ya maginito yomwe ikugwira ntchito pa waya, kotero mphamvu ya maginito pa kondakitala ndi F = 0.4N.
Amperage ndi:
$F=BIl\Rightarrow I=\frac{F}{Bl}=\frac{0,4}{0,2.0,2}$= 10(A)
Sankhani yankho A.
Chitsanzo 3: Mphamvu ya 5A imayenda mu kondakitala yoyikidwa mu 10T maginito. Ngodya yomwe ili pakati pa mayendedwe apano ndi mayendedwe a maginito ndi 60^{0}$. Ngati mphamvu ya maginito imagwiritsa ntchito mphamvu ya 20N pa kondakitala, kutalika kwa woyendetsa ndi wofanana.
A.0.46m B.0.52m C.0.82m D.0.64m
Langizani:
Tili ndi: $F=BIl\sin \alpha \Rightarrow l=\frac{F}{BI\sin \alpha }=\frac{20}{10.5.\sin {{60}^{0}}}$= 0.46m pa
Sankhani yankho A.
Chitsanzo 4: Pakali pano ndi yofanana ndi maginito ndipo ili ndi mbali ina ya maginito. Lolani F kukhala mphamvu yamaginito yomwe ikugwira ntchito pakalipano, ndiye:
AF kuposa 0.
BF = 0.
CF imadalira kutalika kwa nthawi.
DF imatengeranso kukula kwa amperage.
Langizani:
Kokona pakati pa vesi yamakono ndi maginito induction vector ndi ziro, kotero F = 0.
Sankhani yankho B.
Chitsanzo 5: Mphamvu ya maginito yomwe ikugwira ntchito pa waya wonyamula pakali pano ili ndi kolowera komwe kumafanana ndi komwe kuli $\alpha $
A. ali ndi kukula kopitilira apo $\alpha $=0.
B. ali ndi kukula kopitilira apo $\alpha =\frac{\pi}{2}$.
C. ali ndi ngodya yodziyimira payokha kukula kwake $\alpha $.
D. ali ndi kukula kwabwino pamene $\alpha $ yalozeredwa ndi yolakwika pamene $\alpha $ ndi obtuse.
Langizani:
Kuchokera ku formula: $F=BIl\sin \alpha $
F ndi yokwanira pamene sin$\alpha $= 1, kapena $\alpha =\frac{\pi}{2}$
Sankhani yankho B.
Chitsanzo 6: Waya wowongoka wotalika 5cm amayikidwa pamalo ofananirako a maginito ndipo amakhala molunjika ku maginito induction vector. Pakali pano kudzera pawaya ndi 0.75A. Mphamvu ya maginito yomwe ikugwira ntchito pachingwecho ndi 3.10$^{-3}$N. Dziwani momwe maginito amalowetsa mphamvu ya maginito?
A.0.08T B.0.06T C.0.05T D.0.1T
Langizani:
Wayayo ndi wolunjika ku vekita ya maginito, kotero kuti pakati pa vesi yamakono ndi maginito ndi 90$^{0}$.
Tili ndi: $B=\frac{F}{Il\sin \alpha }=\frac{{{3.10}^{-3}}}{0.75.0.05.\sin {{90}^{0} }} $= 0.08T
Sankhani yankho A.
Chitsanzo chachisanu ndi chiwiri: Waya wotalika masentimita 5 amayikidwa pamalo ofananirako a maginito ndipo amayenderana ndi maginito olowetsa maginito. Pakalipano ikuyenda mu waya ndi 0.75A. Mphamvu ya maginito yomwe ikugwira ntchito pa wayayo ndi 3.10$^{-2}$N. Kukula kwa induction ya magnetic field ndi:
A.0.4T B.0.6T C.0.8T D.1.2T
Langizani:
Tili ndi: $B=\frac{F}{Il\sin \alpha }=\frac{{{3.10}^{-2}}}{0.75.0.05.\sin {{90}^{0} }} $ = 0.8 BILIYONI
Sankhani yankho C.
Chitsanzo chachisanu ndi chitatu: Chingwe chawaya chimayikidwa m’maginito ofanana. Ngati kutalika kwa kondakitala ndi amperage kudzera kondakitala akuwonjezeka ndi nthawi 2, kukula kwa mphamvu ya maginito ikugwira ntchito pa kondakitala.
A.2x kuwonjezeka B.2x kuchepa C.4x kuonjezera D.kufanana
Langizani:
Kuchokera ku formula: $F=BIl\sin \alpha $
Ngati ine ndi $l $ zonse zikuwonjezeka ndi 2 nthawi, ndiye F amawonjezeka ndi 4 nthawi.
Sankhani yankho C.
Chitsanzo 9: Chidutswa cha waya $l$ = 0.2m utali wake chimayikidwa mu mphamvu ya maginito yofanana kotero kuti kondakitala agwirizane ndi vesi lolowera kuchokera ku ngodya ya 30$^{0}$. Kudziwa komwe kumayenda kudzera muwaya ndi 10A, kulowetsa maginito B = 2.10$^{-4}$T. Mphamvu ya maginito yomwe ikugwira ntchito pa conductor ndi:
A.10$^{-4}$N B.2.10$^{-4}$N C.2,5.10$^{-4}$N D.3.10$^{-4}$N
Langizani:
Tili ndi: $F=BIl\sin \alpha ={{2.10}^{-4}}.10.0.2.\sin {{30}^{0}}={{2.10}^{-4}}$ AKAZI
Sankhani yankho B.
Chitsanzo cha 10: Yendetsani waya wamtali $l$ = 5cm, mass m = 5g ndi mawaya awiri owonda kwambiri kuti kondakitala akhale wopingasa. Kudziwa kulowetsedwa kwa maginito kwa maginito olunjika pansi, kuli ndi kukula kwa B = 0.5T ndipo komwe kukuyenda kudzera pa kondakitala ndi I = 2A. Ngati g = 10m/s$^{2}$, ndiye kuti ngodya yopatuka ya chingwe kuchokera choyimirira ndi:
A.30$^{0}$ B.45$^{0}$ C.60$^{0}$ D.75$^{0}$
Langizani:
Mphamvu zomwe zikugwira pa chingwechi ndi $\overrightarrow{P},\overrightarrow{{{F}_{t}}},\overrightarrow{T}$
$\tan \alpha =\frac{{{F}_{t}}}{P}=\frac{BIl}{mg}=\frac{0.5.2.0,05}{0.005.10}=1\Rightarrow \alpha ={{45}^{0}}$
Sankhani yankho B.
C) Zochita zolimbitsa thupi:
Funso 1: Kuwongolera kwa mphamvu ya maginito yomwe ikugwira ntchito pa kondakitala yonyamula pakali pano nthawi zambiri imatsimikiziridwa ndi lamulo:
A. dzanja lamanzere. B. wononga screw.
C. dzanja lamanja. D. wononga screw 2.
Funso 2: Mayendedwe a mphamvu ya maginito yomwe imagwira ntchito pa kondakitala yonyamula pakali pano yoikidwa mu mphamvu ya maginito ilibe makhalidwe awa?
A. Perpendicular kwa ndege yomwe ili ndi maginito induction ndi ma vectors apano.
B. Perpendicular to the magnetic induction vector.
C. Kufanana ndi mizere ya maginito.
D. Perpendicular kwa kondakitala panopa-kunyamula.
Funso 3: Chingwe chowongoka cha waya wotalika 10cm chimanyamula mphamvu ya 0.75A, yoyikidwa mu yunifolomu ya maginito yomwe ili ndi mzere wa maginito womwe umayenderana ndi kondakitala. Ngati mphamvu ya maginito yomwe ikugwira ntchito pa waya ndi 0.03N, ndiye kuti kulowetsa maginito ndikofanana ndi:
A.0.8T B.1.0T C.0.4T D.0.6T
Funso 4: Kodi ndi mbali iti mwa zotsatirazi? Ayi mbali yakumanja ya mizere ya maginito yomwe imayimira mphamvu ya maginito yopangidwa ndi maginito omwe akuyenda mu waya wautali wowongoka?
A. Mizere ya mphamvu ndi yozungulira.
B. Ndege yomwe ili ndi mizere ya mphamvu ndi perpendicular kwa kondakitala.
C. Kuwongolera kwa mizere ya mphamvu kumatsimikiziridwa ndi lamulo la dzanja lamanzere.
D. Chitsogozo cha mizere ya mphamvu sichidalira njira ya panopa.
Funso 5: Mayendedwe a mphamvu ya maginito yomwe imagwira ntchito pa kondakitala wamakono Ayi Ndi makhalidwe ati mwa awa?
A. Perpendicular kwa woyendetsa panopa.
B. Perpendicular to the magnetic induction vector.
C. Perpendicular kwa ndege yomwe ili ndi maginito induction ndi ma vectors apano.
D. Zofanana ndi mizere ya maginito.
Funso 6: Ndi ziti mwa ziganizo zotsatirazi zomwe siziri zoona ponena za kulowetsa maginito opangidwa ndi madzi othamanga mu waya wautali wowongoka?
A. Zimatengera chikhalidwe cha kondakitala.
B. zimadalira malo ozungulira.
C. zimadalira mawonekedwe kondakitala.
D. zimadalira kukula kwa panopa.
Funso 7: Kulowetsa maginito opangidwa ndi madzi oyenda mu waya wautali wowongoka Ayi Ndi makhalidwe ati mwa awa?
A. perpendicular kwa kondakitala.
B. molingana ndi amperage.
C. imagwirizana mosagwirizana ndi mtunda kuchokera pa mfundo yomwe ikufunsidwa kufika kwa kondakitala.
D. ndi molingana ndi kutalika kwa kondakitala.
Funso 8: Madzi oyenda muwaya wowongoka wautali kwambiri wokhala ndi ukulu wa 10A woyikidwa mu vacuum umatulutsa mphamvu ya maginito yokhala ndi kukula kochititsa chidwi pamalo a 50cm kutali ndi kondakitala.
A.4.10$^{-6}$T B.2.10$^{-7}$/5T C.5.10$^{-7}$T D.3.10$^{-7}$T
Funso 9: Pamalo otalikirana ndi waya wowongoka wopanda malire wonyamula mawaya a 5A, pali kulowetsedwa kwa 0.4$\mu$T. Ngati panopa mu kondakitala ukuwonjezeka ndi 10A, kulowetsedwa kwa maginito panthawiyo ndi
A.0.8$\mu $T B.1,2$\mu $T C.0.2$\mu $T D.1.6$\mu $T
Funso 10: Sankhani chiganizo cholakwika: Mphamvu yamagetsi yomwe imagwira ntchito pa kondakitala yonyamula pakali pano yoikidwa pamalo a maginito.
A. nthawi zonse amakhala mbali imodzi kuchokera kumunda.
B. nthawi zonse amakhala perpendicular to maginito induction.
C. nthawi zonse amakhala perpendicular kwa kondakitala.
D. zimatengera ngodya pakati pa kondakitala ndi maginito induction.
Funso 11: Sankhani chiganizo zolondola: Ikani dzanja lamanzere kuti mizere ya mphamvu ya maginito ilowe m’chikhatho, chala chachikulu chimasonyeza 90$^{0}$ kusonyeza kumene kuli komweko, kumene mphamvu ya maginito ikugwira ntchito panopa:
A. molunjika kuchokera padzanja kupita ku zala zinayi.
B. mbali yosiyana kuchokera padzanja kupita ku zala zinayi.
C. munjira yofanana ndi chala chachikulu chotambasulidwa.
D. mbali ina ndi chala chotambasula.
Funso 12: Mphamvu ya maginito imagwira ntchito pa waya wa MN womwe ukuyenda mofanana ndi mzere wa maginito.
A. nthawi zonse imakhala yofanana ndi mizere ya maginito.
B. nthawi zonse imakhala yosiyana ndi mizere ya maginito.
C. nthawi zonse amakhala perpendicular kwa mizere maginito.
D. nthawi zonse 0.
Funso 13: Chidutswa cha waya wowongoka, 10cm kutalika, chonyamula 5A yamakono, chimayikidwa mu yunifolomu maginito opangidwa ndi B = 0.08T. Dziwani kuti kondakitala ndi perpendicular kwa maginito induction vekitala. Mphamvu ya maginito yomwe ikugwira ntchito pa conductor ndi:
A.0.02N B.0.04N C.0.06N D.0.08N
Funso 14: Waya wautali wowongoka wonyamula mphamvu ya 20A, yoyikidwa mu mphamvu ya maginito yofanana, imakhala ndi maginito olowetsa maginito B = 5.10$^{-3}$T. Kondakitala amayikidwa molunjika ku maginito induction vector ndi kupatsidwa mphamvu ya maginito ya 10$^{-3}$N. Kutalika kwa conductor ndi:
A.4cm B.3cm C.2cm D.1cm
Funso 15: Chidutswa cha waya $l$ = 0.8m kutalika chimayikidwa mu mphamvu ya maginito yofanana kuti kondakitala agwirizane ndi vekitala yolowera kuchokera ku ngodya ya 60$^{0}$. Dziwani panopa I = 20A ndipo kondakitala amakakamizidwa F = 2.10$^{-2}$N. Kukula kwa maginito induction ndi:
A.0.8.10$^{-3}$T B.10$^{-3}$T C.1,4.10$^{-3}$T D.1,6.10$^{-3}$T
Funso 16: Chidutswa cha waya $l$ = 0.5m kutalika chimayikidwa mu mphamvu ya maginito yofanana kuti kondakitala agwirizane ndi vekitala yolowera kuchokera ku ngodya ya 45$^{0}$. Kudziwa kulowetsa maginito B = 2.10$^{-3}$T ndi kondakitala yonyamula mphamvu ya maginito F = 4.10$^{-2}$N. Kodi mphamvu mu kondakitala ndi chiyani?
A.20A. B.20$\sqrt{2}$A C.40$\sqrt{2}$A D.40A
Funso 17: Mawaya awiri aatali owongoka omwe ali mundege imodzi ndi perpendicular kwa mzake amanyamula ${{I}_{1}}={{I}_{2}}$= 10A mlengalenga. Kulowetsedwa kwa maginito pa M equidistant kuchokera kwa ma conductor awiri mtunda wa 10cm ndi wofanana:
A.8.10$^{-5}$T B.2.10$^{-5}$T C.0 D.4.10$^{-5}$T
Funso 18: Waya wautali wowongoka wamphamvu I$_{1}$ = 5A umadutsa ndikuyikidwa mumlengalenga. Werengetsani mphamvu yomwe ikugwira ntchito pa waya wa 1m wa I$_{2}$ = 10A yoyikidwa mofananiza, 15cm kutali ndi I$_{1}$ ndi moyang’anizana ndi I$_{2}$.
Onaninso: Kodi tsinde ndi masamba a mtengo wa Ha Thu O akhoza kumwa, Ha Thu O wofiira
A.2.10$^{-4}$N B.10$^{-4}$N C.0 D. 2.10$^{-3}$N
Funso 19: Kondakitala wokhala ndi kutalika kwa 10m amayikidwa mu yunifolomu maginito ndi B = 5.10$^{-2}$T. Tangoganizani kuti magetsi okhala ndi kukula kwa 10A amayenda kudzera pa kondakitala. Ngati mphamvu ya maginito yogwiritsidwa ntchito ndi 2.5$\sqrt{3}$N. Dziwani komwe kuli pakati pa $\overrightarrow{B}$ ndi komwe kuli komweko?
A.30$^{0}$ B.60$^{0}$ C.45$^{0}$ D.90$^{0}$
Funso 20: Kondakitala wamtali $l$ = 5m amayikidwa mu yunifolomu maginito mphamvu ya magnitude B = 3.10$^{-2}$T. Pakalipano ikuyenda mu conductor ndi 6A. Dziwani kukula kwa mphamvu ya maginito yomwe ikugwira ntchito pa kondakitala pamene kondakitala ayikidwa mofanana ndi mizere ya maginito.
