Zitsanzo 8 za Mavuto a Mphamvu ya Magetsi
1. Mphamvu yamagetsi ya Coulomb imodzi imadutsa mu waya wa conductor kwa sekondi imodzi. Kukula kwa mphamvu yamagetsi ndi…..
Zokambirana
Amadziwika kuti:
Kulipiritsa (Q) = 1 Coulomb
Nthawi yopuma (t) = masekondi 1
Anafunsa: Mphamvu yamagetsi
Yankho:
Ine = Q / t = 1 / 1 = 1 Coulomb/sekondi = 1 Ampere
2. Mphamvu ya ma Ampere awiri imayenda kudzera mu waya kwa masekondi 8. Dziwani kukula kwa mphamvu yomwe imadutsa mu mfundo ndi kuchuluka kwa ma elekitironi omwe ali mu mphamvuyo!
Zokambirana
Amadziwika kuti:
Mphamvu yamagetsi (I) = 1 Ampere
Nthawi yopuma (t) = masekondi 2
Funso: chaji (Q) ndi chiwerengero cha ma elekitironi (e)
Yankho:
Fomula yamagetsi:
Ine = Q/t
Kufotokozera kwa fomula: I = magetsi, Q = mphamvu yamagetsi, t = nthawi yopuma
Chaji yamagetsi:
Q = I t = (2 Ampere)(masekondi 8) = 16 Coulombs.
Mphamvu ya elekitironi imodzi ndi 1,6 x 10 -19 Coulombs kotero mphamvu ya Coulombs 16 ili ndi ma elekitironi ambiri monga 16 C / 1,6 x 10 -19 Coulombs = 10 x 10 19 ma elekitironi.
3. 10 mA = …… Ampere?
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Ampere imodzi = 1000 milliAmpere
1 milliAmpere = 1/1000 Ampere
10 milliAmpere = 10/1000 Ampere = 1/100 Ampere = 1/10 2 Ampere = 10 -2 Ampere = 0,01 Ampere
4. Yang'anani chithunzicho!
- Dziwani komwe magetsi akupita!
- Dziwani komwe kayendedwe ka ma elekitironi kakuyendera!
Zokambirana
Mphamvu yamagetsi imayenda kuchokera ku mphamvu yayikulu kupita ku mphamvu yochepa. Kutengera ndi chithunzi, njira ya mphamvu yamagetsi imayendera motsutsa wotchi.
Njira yoyendetsera ma elekitironi imachokera ku negative pole kupita ku positive pole. Kutengera ndi chithunzicho, imayenda mozungulira wotchi.
5. Mphamvu yamagetsi ya 10 A imadutsa mu kondakitala kwa mphindi ziwiri. Kuchuluka kwa mphamvu yamagetsi yomwe imadutsa mu kondakitala ndi...
A. 5 Coulombs
B. 12 Coulombs
C. 20 Coulombs
D. 1200 Coulombs
Zokambirana
Amadziwika kuti:
Mphamvu yamagetsi (I) = 10 Ampere
Nthawi yopuma (t) = mphindi ziwiri = masekondi awiri x 60 = masekondi 120
Funso: Kodi mphamvu yamagetsi imatuluka bwanji mu kondakitala?
Yankho:
Fomula ya mphamvu yamagetsi:
Ine = q/t
Kufotokozera: I = magetsi, q = mphamvu yamagetsi, t = nthawi yopuma
Chaji yamagetsi:
q = I t = (10)(120) = 1200 Coulombs
Yankho lolondola ndi D.
6. Ngati ma Coulomb 60 a magetsi akuyenda kudzera mu waya woyendetsa mkati mwa mphindi 5, ndiye kuti magetsi amagetsi...
A. 0,2 Ampere
B. 0,5 Ampere
C. 3 Ampere
D. 6 Ampere
Zokambirana
Amadziwika kuti:
Nthawi yopuma (t) = mphindi 5 = masekondi 5 x 60 = masekondi 300
Mphamvu yamagetsi (Q) = 60 Coulombs
Funso: Mphamvu yamagetsi (I)
Yankho:
Mphamvu yamagetsi:
Ine = Q/t
Ine = 60/300
I = 0,2 Coulomb/sekondi
I = 0,2 Ampere
Coulomb/second imatchedwanso Ampere.
Yankho lolondola ndi A.
7. Chigawo cha SI cha magetsi ndi...
A. ampere
B. volt
C. coulomb
D. ohm
Zokambirana
Dongosolo Lapadziko Lonse la Ma Units la kuchuluka koyambira kwa magetsi ndi Ampere.
Yankho lolondola ndi A.
8. Mphamvu yamagetsi yopangidwa ndi dynamo ingathe kuonetsedwa mu graph...
Zokambirana
Kufotokozera kwa graph: I = magetsi, t = nthawi yopuma
Dynamo imapanga mphamvu yolunjika (DC), pomwe jenereta yamagetsi imapanga mphamvu yosinthira (AC). Chithunzi cha mphamvu yolunjika chikuwonetsedwa mu yankho D, pomwe chithunzi cha mphamvu yosinthira chikuwonetsedwa mu yankho B.
Yankho lolondola ndi D.
