Electricity Foundations Quiz

What is the purpose of a fuse in an electrical circuit?

• To increase current flow

• To prevent excessive current flow

• To store electricity

• To decrease resistance

Which of the following materials is the best insulator?

• Copper

• Glass

• Aluminum

• Steel

What does a circuit breaker do when it detects an overload?

• It reduces the voltage

• It disconnects the power supply

• It increases the resistance

• It repairs the circuit

What electical term is abbreviated AC?

• Alternating current

• Ampere current

• Active current

• Anophoresis current

What apparatus changes alternating current (AC) to direct current (DC)?

• Inductor

• Rectifier

• Generator

• Trransformer

The term used for measuring the strength of an electric current is

• wattage

• voltage

• ampere

• ohm

What unit of measure is equialent to 1/1000 of an ampere?

• Microampere

• Milliampere

• Kiloampere

• Centiampere

The term used for measuring the resistance of an electric current is

• wattage

• voltage

• ampere

• ohm

The term used for measuring how much electric energy is being used in one second is

• watt

• voltage

• ampere

• ohm

Which safety devices prevent the overheating of electric wires?

• Fuses and busters

• Fuses and circuit breakers

• Circuit breakers and volts

• Fuses and conductors