Circuits

What is the main function of a switch in an electrical circuit?

• To change the color of the light

• To turn lights and fans on or off

• To store electrical energy

• To increase the voltage

What happens when the switch is in the off position?

• The circuit is incomplete and the bulb does not glow

• The circuit is complete and the bulb glows

• The bulb changes color

• The circuit explodes

What are materials called that allow electricity to flow through them?

• Insulators

• Conductors

• Resistors

• Capacitors

Which of the following is a good insulator?

• Water

• Copper

• Wood

• Metal

What should you avoid doing with the tester?

• Using it to check the battery

• Testing materials already connected to an electric source

• Testing materials around the house

• Using it to light a bulb