Switches

What is a switch's function in a circuit?

• to make the current hotter or colder

• turn on and off the flow of current

• the pathway that current flows

• to add more power to the circuit

Circuit "A" is broken, because:

• the switch is open

• the switch is closed

• the switch is black

• the switch is not there

Will the light bulb in this circuit and why/why not?

• yes, because it has two batteries

• no, because the switch is open

• yes, because it is in a circuit

• no, because the bulb is burned out

Complete the following sentence -

This circuit is ........

• open and complete

• open and incomplete

• closed and incomplete

• closed and complete

When we turn the switch to the off position the circuit is __________.

• closed

• open

• negative

• positive

In which of these circuits the bulb will light up?

• Circuit C

• Circuit B

• Both B and C

• Circuit A

Predict what difference the position of switch will make in the brightness of the bulb.

• I think the bulb in circuit C will be brighter

• I think the bulb in circuit B will be brighter

• I think there will be no difference

• I think the bulb in circuit A will be brighter