Name:    9th Grade Physics- Electricity Practice Test 1

Multiple Choice
Identify the choice that best completes the statement or answers the question.

1.

If your clothes have a greater  amount of protons than electrons your clothes are considered
 a. positive c. neutral b. negative

2.

A positive charge and a negative charge will
 a. attract c. remain unchanged b. create a neutral charge d. repel

3.

Copper is used in electric wires because it is a good
 a. conductor b. insulator

4.

Use Ohm’s Law to calculate the resistance of a circuit that includes a 4 amps and a 24 volt power supply.
 a. 96 Ohms c. 6 Ohms b. 20 Ohms d. 1/6 Ohms

5.

A neutrally charged object will become positive if
 a. electrons are removed from the object c. protons are removed from the object b. an equal amount of electrons and protons are added d. electrons are added to the object

6.

Batteries collect __________ on the negative terminal of the battery, and flow from negative to positive.
 a. electrons c. neutrons b. protons

7.

Which type of charge will a balloon have after rubbing it in a student’s hair?
 a. neutral c. positive b. negative

8.

Use Ohm’s Law to calculate the volts of a circuit that includes a 3 amps and a 5 Ohm resistor.
 a. 5/3 Ohms c. 8 Ohms b. 15 Ohms d. 3/5 Ohms

9.

Use Ohm’s Law to calculate the current of a circuit that includes a 2 ohm resistor and a 24 volt power supply.
 a. 48 Amps c. 1/12 Amp b. 12 Amps d. 22 Amps

10.

The diagram above is an example of which type of circuit?
 a. series c. parallel b. series and parallel

11.

A negative charge and a negative charge will
 a. remain unchanged c. create a neutral charge b. attract d. repel

12.

The current is least at which point in the circuit if the electrons travel in a clockwise direction from the power source?
 a. A c. C b. B