Electricity and Circuits Quiz

Which of the following is a good conductor of electricity?

• Wood

• Rubber

• Copper

• Plastic

What is the source of electric current in a circuit?

• Bulb

• Switch

• Battery

• Wire

Which device is used to control the flow of electric current in a circuit?

• Bulb

• Switch

• Battery

• Wire

What is the path through which electric current flows called?

• Circuit

• Conductor

• Insulator

• Switch

What happens when the switch in an electric circuit is open?

• The bulb glows brighter

• The bulb glows dimmer

• The bulb does not glow

• The bulb glows with the same brightness

Which of the following materials is a good insulator?

• Copper

• Iron

• Rubber

• Aluminum

What is the function of a fuse in an electric circuit?

• To increase the flow of current

• To decrease the flow of current

• To protect the circuit from overloading

• To control the brightness of the bulb

What is the unit of electric current?

• Volt

• Ampere

• Ohm

• Watt

What is the potential difference between two points in an electric circuit called?

• Current

• Resistance

• Voltage

• Power

Which law states that the current flowing through a conductor is directly proportional to the potential difference across its ends, provided the temperature and other physical conditions remain constant?

• Ohm's law

• Kirchhoff's law

• Faraday's law

• Lenz's law