Current flow is:

• Flow of voltage in a circuit.

• The impedance of a circuit.

• The inductive reactance of the circuit.

• The flow of electrons in the circuit.

Impedance is:

• Opposition to alternating current flow.

• Electrical pressure.

• Amperage.

• Voltage applied to the circuit.

Like charges:

• A. attract one another.

• B. repel each other.

• C. are negative.

• D. are positive.

Any material that will readily release electrons is called:

• an insulator.

• a conductor.

• a resistance.

• a neutron.

The symbol for current is:

• E

• I

• R

• W

Which of the following materials would be best suited for use as a semi-conductor?

• copper

• Bakelite

• aluminum

• silicon

The safety ground conductor is usually color coded:

• red or white.

• black or white.

• green or bare.

• white or bare.

An electron has:

• no charge.

• a negative charge.

• a positive charge.

• neutral charge.

Resistance is:

• A. Opposition to current flow.

• B. Electrical pressure causing voltage flow.

• C. Enables amperage flow.

• D. Opposition to alternating current only.

How many watts of power are used by a heater operating at 240 volts and drawing 5 amps?

• 5 watts

• 48 watts

• 245 watts

• 1200 watts