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Evaluare fizica cls a 8a

Authored by Mirela Stan

Physics

1st Grade

Used 82+ times

Evaluare fizica cls a 8a
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22 questions

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1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Curentul electric este:

un ansamblu format din elemente de circuit

miscarea ordonata a purtatorilor de sarcini electrice

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Prin circuitele electrice inchise

trece curentul electric

nu trece curentul electric

3.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Izolatoare termice sunt

metele

lemn, metal, hartie, sticla, pluta

lemn, hartie, sticla, pluta, mase plastice

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Sensul curentului electric in afara generatorului este de la

borna pozitiva la borna negativa

borna negativa la borna pozitiva

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Relatia de calcul pentru intensitatea curentului electric este

U= RxI

I= q/t

I= t/q

6.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Instrumentul de masura folosit pentru intensitatea curentului electric este

voltmetru

ampermetru

ohmmetru

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

O eoliana genereaza cu curent electric timp de 2 ore. Stiind ca prin circuitul electric trece o cantitate de sarcina 4800 C, aflati intensitatea curentului electric.

4 A

4 V

40 A

40 V

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