Electric circuits

A circuit...(複選題 答案有三個）

• a closed system of wires that electricity can flow

• commons part are battery, wires, switch, and light bulb

• Every electricity appliances have multiple circuits

• Electric current doesn’t flow in the circuit

A battery can be a ______________ in an electric circuit.

• energy source

• load

• switch

• electrical appliances

If a circuit is OPEN...

• the circuit is complete and the light will work.

• the circuit is broken and the light will NOT work

What can create a complete circuit?

• wire, light bulb, energy source, switch

• inside wire, switch, outside wire, electricity

• wire, switch, battery, gap

What are the three parts must needed for a complete circuit?

• light bulb, battery, wire

• wire, switch, battery

• energy source, copper wire, cable(電線電纜）

A complete, unbroken path that allows electricity to flow is called a ___________ circuit.

• open

• closed

• parallel

• conductor

What type of circuit is this?

• parallel circuit

• stinky circuit

• open circuit

• closed circuit

this circuit is .....?

• open

• closed

• closed

Will the light bulb light in this circuit?

• Yes

  The switch works when it’s open!

• No

  The switch doesn’t work when it’s open!

Is a plastic fork an insulator or conductor?

• insulator

• conductor