Physics: Electric Current

Test Quiz

1. What is electrical current?

a. The potential difference between two points in an electric circuit

b. The rate at which electrical energy is transferred

c. The flow of electric charge

d. All of the above

e. None of the Above

2. What is the unit of measurement for electrical current?

a. Volt

b. Ampere

c. Watt

d. Coulomb

e. Ohm

3. What letter is used to represent current in an electrical diagram or formula?

a. c

b. e

c. v

d. p

e. i

4. What is the standard unit of measurement for electrical charge?

a. Volt

b. Ampere

c. Watt

d. Coulomb

e. Ohm

5. According to Ohm's Law, current equals the voltage divided by the _________.

a. Resistance

b. Inductance

c. Capacitance

d. Power

e. Conductance

6. If you have a 12 Volt battery placed across a 6 Ohm resistor, what will the current be?

a. 0.5 Amps

b. 1 Amp

c. 2 Amps

d. 4 Amps

e. 5 Amps

7. If you place a 50 Volt power source across a 10 Ohm resistor, what will the current be?

a. 0.5 Amps

b. 1 Amp

c. 2 Amps

d. 4 Amps

e. 5 Amps

8. If the current is 2 Amps and the voltage is 8 Volts, what is the power?

a. 4 Watts

b. 6 Watts

c. 10 Watts

d. 16 Watts

e. 28 Watts

9. What do we call current that only flows in one direction?

a. AC current

b. DC current

c.

d.

e.

10. What do we call current that constantly changes direction?

a. AC current

b. DC current

c.

d.

e.

**About this quiz:** All the questions on this quiz are based on information that can be found on the Physics: Electric Current page at www.ducksters.com/science/physics/electric_current.php.

This quiz is copyright property of Ducksters and TSI. All rights reserved. Please visit **www.ducksters.com**.