
Quiz despre Electrocinetica
Authored by FLORINA ANDREI
Physics
10th Grade

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12 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Legea lui Ohm pentru o porțiune de circuit este:
I=U/R
R=ρl/S
I=q/Δt
U=W/q
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Într-un circuit electric circulă un curent cu intensitea de 8A timp de 2 min. Ce sarcină electrică a fost transportată ?
8C
16C
960 C
256 C
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Un resistor are putere nominală de 24 W și are o tensiune la borne de 12 V. Valoarea rezistenței electrice este :
0,5Ω
144 Ω
2 Ω
6 Ω
4.
OPEN ENDED QUESTION
3 mins • 1 pt
Rezistența circuitului exterior al unei surse cu E=1,5 V este R=2 Ω. Tensiunea la bornele sursei este U=1V. Să se calculeze rezistența internă a sursei.
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5.
OPEN ENDED QUESTION
3 mins • 1 pt
Care este tensiunea la capetele unui conductor cu rezistența R=5 Ω, prin care trece o sarcină electrică q=0,72KC în decurs de 1 minut?
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6.
OPEN ENDED QUESTION
3 mins • 1 pt
Ce energie electrică consumă în 2h un element de circuit cu puterea electrică de 1 KW? Exprimați rezultatul în KWh și în J.
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7.
OPEN ENDED QUESTION
3 mins • 1 pt
O baterie cu t.e.m. E=130V, alimentează un resistor R=25Ω. În aceste condiții, puterea electrică în resistor este P=625W. aflați rezistența internă a bateriei.
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