
Curent electric
Physics
8th Grade
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9 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Un circuit electric simplu este format din:
generator, întrerupător, bec
fire de legătură, întrerupător, bec
fire de legătură, întrerupător
generator, întrerupător, bec, fire de legătură
2.
FILL IN THE BLANK QUESTION
20 sec • 1 pt
Curentul electric trece doar printr-un circuit.....
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Legea lui Ohm pentru o porțiune de circuit este dată de formula:
I = U * R
R = U * I
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Legea lui Ohm pentru întregul circuit este reprezentată de formula:
I = E*R
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Intensitatea curentului electric la scurtcircuit este:
minimă
maximă
0
6.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Aflați tensiunea la bornele unui bec care este străbătut de un curent de 100 mA și are rezistența de 20 Ω.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Care este rezistența echivalentă R p a unei grupări în paralel de rezistoare, fiecare rezistor având rezistența notată cu R 1, R 2 și R 3 ?
R p = R 1 + R 2 + R 3
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