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Power Quiz

Authored by Anika Al-Shura

Science

8th Grade

Used 1+ times

Power Quiz
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18 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the unit of power in an electric circuit?

Joules (J)

Watts (W)

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which formula is used to calculate power in an electric circuit?

P = IV

P = IR

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If a 20 V power supply powers a circuit with a 0.5 A current, what is the power delivered to the circuit?

5 W

10 W

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following equations is derived by combining Ohm's law with the power equation?

P = IV

P = I^2R

P = V^2/R

All of the above

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the formula for calculating power (P) in a circuit?

P = V^2 / R

P = I^2 * R

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If 50 mA of current flows through a 200 Ω resistor, what is the power dissipated by the resistor?

0.5 W

0.1 W

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the unit of power?

Joule

Watt

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