Electric Current and Ohm's Law Quiz

What does electric current actually mean?

• Electric current is a continuous flow of charge.

• Electric current is a stationary charge.

• Electric current is a flow of heat.

• Electric current is a flow of light.

How does charge flow in a direct current?

• One direction

• Two directions

• Random directions

• No direction

What is an example of a place where alternating current is used?

• Home or school

• Car battery

• Flashlight

• Solar panel

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Which of the following is a characteristic of a good conductor?

• Freely moving electrons

• Fixed electrons

• No electrons

• Electrons that repel each other

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Which type of current is used in a flashlight?

• Direct current

• Alternating current

• Static current

• Pulsating current

Which type of current is typically used in homes?

• Alternating current

• Direct current

• Static current

• Pulsating current

What does Ohm’s Law explain?

• How voltage, current, and resistance are related

• How magnets work

• How light is refracted

• How sound travels

What happens to electrons as they move through a conductor?

• They speed up

• They collide with electrons and ions

• They stop moving

• They change direction

Which 2 factors affect a material's resistance?

• Its length

• Its temperature

• Its velocity

• Its color

What is a superconductor?

• A material with high resistance

• A material with almost zero resistance at low temperatures

• A material that conducts heat

• A material that insulates electricity

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