Circuits

Which of these best completes the circuit?

• rubber band
• metal nail
• leather shoelace
• wooden toothpick

This image represents what type of circuit?

• open
• closed
• series
• parallel

Will the light bulb in this circuit light 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

If bulb 1 burns out, what will occur?

• bulbs 2 and 3 will go out
• bulbs 2 and 3 receive more volts
• bulbs 2 and 3 will stay lit
• nothing will happen

The circuit on the left is not complete (the light is off) because:

• the switch is closed

• the switch is open

• the battery is missing

• the battery is in backwards

How many light bulbs would be ON with this complete circuit?

• 1

• 3

• 2

• 4

How many light bulbs would be ON if the wire of this circuit was cut where the scissors are?

• 1

• 3

• 2

• 0

How many light bulbs would be ON if the wire of this circuit was cut where the scissors are?

• 1

• 3

• 2

• 0

Which switches can be open and still allow all the motors to run, buzzers to make sound, and lights to be on?

• Switch 1 and 4

• Switch 1 and 3

• Switch 2 and 3

• Switch 3 and 4

Which example will be able to have only 1 light on and the bell will still ring?

• F

• G

• H

• J