Electricity Basics

What is an electric circuit?

• A path that allows electricity to flow

• A type of light bulb

• A type of magnet

• A type of battery

Name one example of a good conductor of electricity.

• Plastic

• Rubber

• Wood

• Copper

What is the unit of electric current?

• C

• B

• D

• A

Explain the difference between series and parallel circuits.

• Series circuits have only one path for current to flow, while parallel circuits have multiple paths for current to flow.

• Series circuits have no current flowing, while parallel circuits have high current flowing.

• Series circuits have multiple paths for current to flow, while parallel circuits have only one path for current to flow.

• Series circuits have high resistance, while parallel circuits have low resistance.

What is the role of a switch in an electric circuit?

• To generate electricity

• To open or close the circuit, controlling the flow of electricity.

• To store electricity

• To measure the voltage

What is the function of an insulator in an electric circuit?

• Prevent the flow of electric current

• Generate heat in the circuit

• Increase the flow of electric current

• Amplify the voltage in the circuit

What happens to the brightness of bulbs in a series circuit if one bulb goes out?

• The brightness of all bulbs will remain the same

• The brightness of all bulbs will decrease or they will all go out.

• The brightness of all bulbs will fluctuate

• The brightness of all bulbs will increase

How does the total resistance in a parallel circuit compare to the individual resistances?

• Equal to the individual resistances

• Less than the individual resistances

• Greater than the individual resistances

• Unrelated to the individual resistances

What is the formula to calculate electric current?

• F = ma

• V = IR

• P = VI

• I = Q/t

Why is it important to use proper insulation in electrical wiring?

• To make the wiring look more aesthetically pleasing

• To prevent electrical shocks, fires, and short circuits.

• To save money on insulation costs

• To increase the risk of electrical shocks and fires