Electricity and Electric Circuits

What is electricity?

• An electric current.

• The energy produced by an electric current.

• Electrons.

• The energy produced by the sun.

What is an electric current?

• Electricity.

• Electric energy.

• The movement of electrons.

• The movement of atoms.

Which electric device transforms electricity into heat?

• A washing machine.

• A fan.

• A hair dryer.

• A computer screen.

An electric motor changes the electricity into what type of energy?

• Heat.

• Sound.

• Light.

• Movement.

Which electric device changes electricity into sound?

• Radio

• Fan

• Light bulb

• Battery

Which element of a circuit produces the polarity needed for electrons to move?

• Generator

• Wire

• Receptor

• Switch

Which element of the circuit changes the electricity into a different form of energy?

• Generator

• Wire

• Receptor

• Switch

Which element of the circuit opens and closes the connection?

• Generator

• Wire

• Receptor

• Switch

Which of the following statements is true?

• A circuit cannot work without a light bulb.

• A circuit cannot work without a switch.

• A circuit cannot work if it has a gap (if it is open).

• A circuit cannot work during the night.

Which is the correct symbol for a receptor?

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