Science DOL 3/20 Parallel Circuits

Students made the circuit shown.

Cutting the wire at which numbered position would allow two of the lightbulbs to remain lit?

• Position 1

• Position 2

• Position 3

• Position 4

In some circuits that are used for decorating, one burned-out lightbulb will prevent all the other light bulbs from lighting. In other circuits, one burned-out lightbulb will have no effect on the other light bulbs.

In which of these circuits will other light bulbs still light even if one bulb is burned out?

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A student builds a circuit allowing the light bulbs to light, the buzzers to make sound, and the motors to turn.

Which two switches can be open and still allow all the parts to work?

• Switches 1 and 3

• Switches 1 and 4

• Switches 2 and 3

• Switches 3 and 4

Students constructed a circuit using different-colored light bulbs.

What will happen if Switch 3 is closed, and the other switches are left open?

• Only the white bulb will operate.

• None of the bulbs will operate.

• Only the white and yellow bulbs will operate.

• Only the red and blue bulbs will operate. 

The circuit has three lightbulbs and a bell.

Which procedure will result in only the blue light bulbs operating? 

• Closes Switches 1 and 2 and leave Switch 3 open

• Close Switch 3 and leave Switches 1 and 2 open

• Close Switches 2 and 3 and leave Switch 1 open

• Close Switch 2 and leave Switches 1 and 3 open