Electrical Power and Circuits

Why did the person who made Circuit A probably connect the wires to a penny?

• They needed to use a penny to make the bulb light.

• They were testing to see if the penny conducts electricity.

• The penny will prevent sparks.

In the diagram below, describe the energy transformations that occur in the circuit, starting with the battery, when the light is on.

• Chemical to Electric to Light

• Chemical to Mechanical to Light

• Electrical to Chemical to Light

• Light to Chemical to Electrical

Tags

NGSS.MS-PS3-5

What supplies energy in an electric

circuit?

• conductor

• light bulb

• battery

Which material is a conductor?

• plastic

• silver

• glass

In a complete circuit, the wire is the_____________.

• load

• conductor

• power source

Which of these could be used as a resistor in a

circuit?

• a gas engine

• a rubber eraser

• an electric motor

Which item is a resistor in Circuit B?

• light bulbs

• wire

• battery

A ______ opens and closes an electric circuit.

• conductor

• switch

• source

• insulator

A material that does not allow electricity to flow through the circuit is known as a _____

• conductor

• insulator

• source

• switch

A material that allows electricity to flow through the circuit without disruption is ______

• conductor

• insulator

• switch

• source