Electric Current

Look at the electric circuit below:

• The circuit is closed.

• It doesn't include a load.

• The circuit is open.

• It does not include an electrical source.

Which of these can supply current to an electrical circuit?

• A battery

• A light bulb

• A switch

• Wire

Which object could replace the pennies and still allow the circuit to work?

• Rubber bands

• Strips of cloth

• Steel paper clips

• Wooden toothpicks

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Which of these materials is a conductor?

• Rubber

• Plastic

• Glass

• Copper

Which of these materials is an insulator?

• glass

• aluminum

• copper

• steel

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Which part of a circuit starts and stops the flow of electrical current?

• battery

• light bulb

• wire

• switch

Electrical current DOES NOT flow in

• an open circuit

• a closed circuit

• an electromagnet

• a complete circuit

Which type of material DOES NOT allow electric current to flow through it?

• An insulator

• A magnet

• A conductor

• A metal

Joe set up an electrical circuit to determine whether certain materials would conduct electricity. Which of these items would complete Joe's circuit?

• A metal pin

• A plastic bag

• A rubber ball

• A wooden block

Which type of electricity moves along a pathway to make a light turn on?

• Static electricity

• Lightning electricity

• Turbine electricity

• Current electricity