Izibonelo Eziyi-8 Zezinkinga Zamandla Kagesi
1. Ishaja kagesi engu-1 Coulomb idlula ngentambo yomqhubi umzuzwana owodwa. Ubukhulu bomsinga kagesi …..
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Kuyaziwa ukuthi:
Ishaja (Q) = 1 Coulomb
Isikhawu sesikhathi (t) = 1 imizuzwana
Kubuziwe: Ugesi wamandla kagesi
Impendulo:
I = Q / t = 1 / 1 = 1 Coulomb/second = 1 Ampere
2. Ugesi wama-Ampere ama-2 ugeleza ngentambo imizuzwana eyi-8. Thola ubukhulu beshaja edlula endaweni ethile kanye nenani lama-electron kuleyo shaja!
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Kuyaziwa ukuthi:
Amandla kagesi (I) = 1 Ampere
Isikhawu sesikhathi (t) = 2 imizuzwana
Umbuzo: ukushaja (Q) kanye nenani lama-electron (e)
Impendulo:
Ifomula yamandla kagesi:
I = Q/t
Incazelo yefomula: I = ugesi wamanje, Q = ukushaja kukagesi, t = isikhathi esiphakathi
Ishaja kagesi:
Q = I t = (2 Ampere)(imizuzwana engu-8) = 16 Coulombs.
Ishaja ye-electron eyodwa ingu-1,6 x 10 -19 Coulombs ngakho-ke ishaja ye-Coulombs engu-16 inama-electron amaningi njengo-16 C / 1,6 x 10 -19 Coulombs = 10 x 10 19 ama-electron.
3. 10 mA = …… Ampere?
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I-Ampere eyi-1 = ama-Ampere ayi-1000 milli
I-milliampere eyi-1 = 1/1000 Ampere
10 milliAmpere = 10/1000 Ampere = 1/100 Ampere = 1/10 2 Ampere = 10 -2 Ampere = 0,01 Ampere
4. Bheka isithombe!
– Thola indlela kagesi ohamba ngayo!
– Thola indlela yokunyakaza kwama-electron!
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Ugesi usuka kumandla aphezulu uye kumandla aphansi. Ngokusekelwe kumdwebo, isiqondiso sogesi siphambene newashi.
Isiqondiso sokunyakaza kwama-electron sisuka epalini elibi siye epalini elihle. Ngokusekelwe esithombeni, sihamba ngokwewashi.
5. Ugesi ongu-10 A ugeleza ngomqhubi imizuzu emi-2. Inani lokushaja kukagesi eligeleza ngomqhubi...
A. 5 Coulombs
B. 12 Coulombs
C. 20 Coulombs
D. 1200 Coulombs
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Kuyaziwa ukuthi:
Amandla kagesi (I) = 10 Ampere
Isikhawu sesikhathi (t) = imizuzu emi-2 = imizuzwana emi-2 x engama-60 = imizuzwana eyi-120
Umbuzo: Ingakanani ishaja kagesi ehambayo kumqhubi?
Impendulo:
Ifomula yamandla kagesi:
I = q/t
Incazelo: I = ugesi wamanje, q = ukushaja kukagesi, t = isikhathi esiphakathi
Ishaja kagesi:
q = I t = (10)(120) = 1200 Ama-Coulomb
Impendulo efanele ngu-D.
6. Uma ama-Coulombs angu-60 kagesi egeleza engxenyeni yentambo yokuqhuba ngemizuzu emi-5, khona-ke ugesi...
A. 0,2 Ama-Ampere
B. 0,5 Ampere
Ama-Ampere angu-C. 3
D. 6 Ampere
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Kuyaziwa ukuthi:
Isikhawu sesikhathi (t) = imizuzu emi-5 = imizuzwana emi-5 x engama-60 = imizuzwana engama-300
Ishaja kagesi (Q) = 60 Ama-Coulomb
Umbuzo: Amandla kagesi (I)
Impendulo:
Amandla kagesi:
I = Q/t
Mina = 60/300
I = 0,2 Coulomb/isekhondi
I = 0,2 Ampere
I-Coulomb/yesibili ibizwa nangokuthi i-Ampere.
Impendulo efanele ngu-A.
7. Iyunithi ye-SI yamandla kagesi…
I-A. ampere
I-volt ye-B
C. coulomb
D. ohm
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Uhlelo Lwamazwe Ngamazwe Lweziyunithi lwenani eliyisisekelo lamandla kagesi yi-Ampere.
Impendulo efanele ngu-A.
8. Ugesi okhiqizwa yi-dynamo ungaboniswa kugrafu...
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Incazelo yegrafu: I = ugesi wamanje, t = isikhathi esiphakathi
I-dynamo ikhiqiza ugesi oqondile (DC), kuyilapho ijeneretha kagesi ikhiqiza ugesi oshintshanayo (AC). Igrafu yogesi oqondile iboniswe empendulweni D, kanti igrafu yogesi oshintshanayo iboniswe empendulweni B.
Impendulo efanele ngu-D.
