NCCER Electrical

Question 1

What is the unit of measurement for electrical resistance?

Accepted Answer

Ohm

Answer

Ampere

Answer

Volt

Answer

Watt

Question 2

According to Ohm's Law, if voltage remains constant and resistance doubles, what happens to current?

Accepted Answer

Current is reduced by half

Answer

Current doubles

Answer

Current remains the same

Answer

Current increases by four times

Question 3

Which type of circuit provides only one path for current to flow through all components?

Accepted Answer

Series circuit

Answer

Parallel circuit

Answer

Combination circuit

Answer

Bridge circuit

Question 4

What color is the grounding conductor required to be in standard US electrical wiring?

Accepted Answer

Green

Answer

White

Answer

Black

Answer

Red

Question 5

What does GFCI stand for in electrical work?

Accepted Answer

Ground Fault Circuit Interrupter

Answer

Ground Fault Current Indicator

Answer

General Fault Circuit Interrupter

Answer

Ground Flow Current Interrupter

Question 6

What is the standard nominal voltage for most residential branch circuits in the United States?

Accepted Answer

120 volts

Answer

110 volts

Answer

240 volts

Answer

480 volts

Question 7

Which instrument is used to measure electrical current flowing through a circuit?

Accepted Answer

Ammeter

Answer

Voltmeter

Answer

Ohmmeter

Answer

Wattmeter