Zitsanzo 5 za Mavuto Oyambitsa Magnetic
1. Chithunzicho chikuwonetsa njira yolondola ya mzere wa mphamvu...
Zokambirana
Kuyenda kozungulira kumayimira njira ya magetsi, pomwe kuyenda kwa mzere wowongoka kumayimira njira ya mphamvu yamaginito.
Malinga ndi lamulo la dzanja lamanja, pindani zala zinayi za dzanja lanu lamanja m'dzanja lanu kenako wongolerani chala chanu chachikulu. Zala zinayi zopindika zimasonyeza komwe magetsi akupita, pomwe chala chachikulu chimasonyeza komwe mphamvu yamaginito ikupita.
Yankho lolondola ndi A.
2. Chithunzi cholondola cha mphamvu ya maginito malinga ndi momwe mphamvu yamagetsi imayendera mu kondakitala ndi...
Zokambirana
Kulunjika kwa mphamvu yamagetsi ndi komwe mphamvu yamagetsi imayendera zimatsimikiziridwa pogwiritsa ntchito lamulo la dzanja lamanja. Tambasulani dzanja lanu lamanja, wongolerani chala chanu chachikulu, ndikugwedeza zala zina zinayi. Kulunjika kwa chala chachikulu ndi komwe mphamvu yamagetsi imayendera, ndipo chala chachikulu ndi komwe mphamvu yamagetsi imayendera.
Yankho lolondola ndi A.
3. Kupatuka kwa singano ya kampasi poyerekeza ndi komwe magetsi akupita kungadziwike pogwiritsa ntchito lamulo la dzanja lamanja. Lamuloli limatsimikiziridwa ndi...
A. Oersted
B. Faraday
C. Ampere
D. Lorentz
Zokambirana
Singano ya kampasi ikayikidwa pafupi ndi waya wonyamula magetsi, maginito a singano ya kampasi, yomwe poyamba imaloza kumpoto ndi kum'mwera, imasintha njira. Chifukwa maginito amatha kusunthidwa ndi maginito ena okha ndipo palibe maginito ena pafupi, zitha kutsimikiziridwa kuti pali mphamvu ya maginito yozungulira singano ya kampasi.
Popeza pali waya wonyamula magetsi kuzungulira singano ya maginito, tinganene kuti mphamvu yamagetsi yomwe ikuyenda kudzera mu waya imapanga mphamvu ya maginito, kotero kuti mphamvu ya maginito imasuntha singano ya kampasi ya maginito. Chochitika ichi chinawonedwa koyamba ndi Hans Christian Oersted (1777-1851) mu 1820.
Kulunjika kwa mphamvu yamagetsi ndi komwe mphamvu yamagetsi imayendera kungadziwike pogwiritsa ntchito lamulo la dzanja lamanja. Tambasulani dzanja lanu lamanja, lozani chala chanu chachikulu mmwamba, ndikugwedeza zala zanu zina zinayi. Kulunjika kwa chala chachikulu (muvi wokwera mmwamba) kukugwirizana ndi komwe mphamvu yamagetsi imayendera, ndipo komwe zala zopindika zimayenderana ndi komwe mphamvu yamagetsi imayendera (muvi wozungulira).
Yankho lolondola ndi A.
4. Yang'anani chithunzi chotsatirachi! Chomwe chingayambitse emf yoyambitsidwa ndi...
A. pamene maginito ali kunja kwa koyilo
B. pamene maginito amalowa ndi kutuluka mu coil
C. pamene maginito ali mu coil
D. pamene singano ya galvanometer ikuyenda
Zokambirana
Ngati maginito alowetsedwa ndi kutuluka mu coil, singano ya galvanometer idzapotoka. Kupotoka kumeneku kumasonyeza kuti magetsi akuyenda kudzera mu coil. Mphamvu yamagetsi yopangidwa mwanjira imeneyi imatchedwa mphamvu yamagetsi yoyambitsidwa, ndipo njira yopangira magetsi mwanjira yomwe yawonetsedwa imatchedwa induction yamagetsi.
Yankho lolondola ndi B.
5. Zinthu zingapo zomwe zimakhudza kukula kwa electromagnetic induction emf:
1. Chiwerengero cha ma turn a waya pa coil
2. Kuwongolera kwa mizere ya mphamvu ya maginito mu coil
3. Liwiro la kuyenda kwa maginito kapena koyilo
4. Njira yolowera waya pa coil
Chiganizo cholondola ndi nambala…
A. 1 ndi 3
B. 1 ndi 4
C. 2 ndi 4
D. 2 ndi 3
Zokambirana
Ngati maginito alowetsedwa ndi kutuluka mu coil, singano ya galvanometer idzapotoka. Kupotoka kumeneku kumasonyeza kuti magetsi akuyenda kudzera mu coil. Mphamvu yamagetsi yopangidwa mwanjira imeneyi imatchedwa mphamvu yamagetsi yoyambitsidwa, ndipo njira yopangira magetsi mwanjira yomwe yawonetsedwa imatchedwa induction yamagetsi.
Kukula kwa kulowetsedwa kwa maginito kumatsimikiziridwa pogwiritsa ntchito lamulo la Faraday la kulowetsedwa:
Kuchuluka kwa kusintha kwa maginito kumatsimikiziridwa ndi liwiro la kuyenda kwa maginito kapena coil.
Yankho lolondola ndi A.
Gwero la funso:
Mafunso a Mayeso a Sayansi ya Sukulu ya Sekondale/Chisilamu cha Sukulu ya Sekondale
