Understanding Electricity and Its Principles

This circuit has a 24 volt battery and the resistor is 8 ohms. How many amps are running through the circuit?

• 3 Amps

• 192 Amps

• 2 Amps

• 4 Amps

If you increase the size of the resistor and keep the voltage the same, what will happen to the current?

• Current will increase

• Current will decrease

• Current will stay the same

What is Ohm's Law?

Which of the following is a unit of resistance?

• Ampere

• Volt

• Ohm

• Watt

What is the main difference between AC and DC current?

• AC current flows in one direction, while DC current changes direction.

• AC current changes direction, while DC current flows in one direction.

• AC current is used in batteries, while DC current is used in homes.

• AC current is weaker than DC current.

Which of the following is a safety device used in electrical circuits?

• Resistor

• Capacitor

• Fuse

• Inductor

What is the formula for electrical power?

What is the role of the national grid?

• To generate electricity

• To distribute electricity

• To store electricity

• To convert electricity

Which of the following materials is a good conductor of electricity?

• Rubber

• Glass

• Copper

• Wood

What is the function of a capacitor in a circuit?

• To resist the flow of current

• To store electrical energy

• To increase voltage

• To decrease current