Electrical Test Review

Front

Electric field lines flow ______ positive charges and _____ negative charges.

Back

into, out of

Front

A drawing of an electrical circuit using symbols is called a ______.

Back

Schematic Diagram

Front

A simple electric circuit is composed of:

Back

Conductor, Voltage Source, and Load

Front

How much resistance does a heavy duty flashlight have if it has a current of 35 mA flowing through it and is being powered by a 6 V cell?

Back

171 Ω

Front

A substance that allows an electric charge to flow through it easily is called a ______.

Back

Conductor

Front

What is the unit of electric current?

Back

Ampere (A)

Front

What is the formula for Ohm's Law?

Back

V = I × R (Voltage = Current × Resistance)

Front

What is the role of a resistor in a circuit?

Back

To limit the flow of electric current.

Front

What is the difference between a conductor and an insulator?

Back

A conductor allows electric charge to flow easily, while an insulator resists the flow of electric charge.

Front

What does a voltmeter measure?

Back

Voltage (potential difference) across two points in a circuit.