Electricity Fundamentals Quiz

What is the unit of electric current?

• Volt

• Ampere

• Ohm

• Watt

Ohm's Law states that the current through a conductor between two points is directly proportional to the voltage across the two points. What is the formula that represents this law?

What is the unit of electrical resistance?

• Ohm

• Ampere

• Volt

• Watt

Which of the following is NOT a good conductor of electricity?

• Copper

• Aluminum

• Rubber

• Gold

What does the term "alternating current" (AC) refer to?

• Current that flows in one direction only

• Current that changes direction periodically

• Current that increases over time

• Current that is used in batteries

What is the formula for calculating electrical power in a circuit?

• Both A and B are correct

Which of the following is a unit of electrical energy?

• Joule

• Watt

• Ohm

• Ampere

What is the principle behind the operation of a transformer?

• Electromagnetic induction

• Electrostatic discharge

• Direct current conversion

• Chemical energy conversion

In a series circuit, if one component fails, what happens to the flow of electricity?

• It continues through other paths.

• It stops completely.

• It doubles in intensity.

• It reverses direction.

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

• To increase current flow

• To decrease resistance

• To protect against excessive current

• To convert AC to DC