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Worksheets

Friday Circuits

Total questions: 13

Worksheet time: 11mins

Name
Class
Date
1.

Which of the lightbulbs in the diagram will light

up when the switch is closed?

2.

To sound the buzzer without lighting up the

lightbulb, which switches should be closed?

3.

Where can I cut the wire so that no light bulb turns on?

4.
A class prepared some electrical circuits using battery, connecting wires, and three light bulbs.  Which of these circuits can make the three bulbs light?
a)
A
b)
B
c)
C
d)
D
5.

A student builds a circuit made up of a battery, two light bulbs, and a switch. What will the student most likely observe in this circuit?

a)

Light bulb 1 and light bulb 2 will both be on

b)

Light bulb 1 will be off, but light bulb 2 will be on

c)

Light bulb 1 and light bulb 2 will both be off

d)

Light bulb 1 will be on, but light bulb 2 will be off

6.

The diagram shows a series circuit with three lit bulbs. How many of the bulbs will remain lit if the wire is cut a the point shown by the arrow?

a)

0

b)

1

c)

2

d)

3

7.
In the picture, if you replace the paper clip with a plastic spoon, what happens? 
a)
The bulb doesn't light
b)
The bulb is dimmer
c)
The wires get hot
d)
There is no charge
8.

Why is electrical wiring usually made from copper?

a)

Because copper is shiny

b)

Because copper conducts electricity

c)

Because copper is not magnetic

d)

Because copper insulates electricity

9.

Will the light bulbs light up in this image?

a)

Yes, both of them will

b)

Yes, but only the one on the right

c)

No, neither of them will

d)

Yes, but only the one on the left

10.

Is this a working circuit?

a)

Yes

b)

No

c)

I'm not sure, I would need to test it myself.

11.
This circuit has a battery, buzzer, and switch.
When the switch is closed the buzzer will sound because -
a)
the switch gives energy to the battery
b)
the buzzer is made of special plastic
c)
the wires are cooled by the surrounding air
d)

electricity can flow in a complete path (from one side of the battery to the other)

12.
Choose the correct sentence.
a)
This circuit will work because it is an open circuit.
b)
This circuit will work because it is a closed circuit.
c)
This circuit will NOT work because it is an open circuit.
d)
This circuit will NOT work because it is a closed circuit.
13.

What is missing from this circuit? Why would the light bulbs be off?

a)

The battery, there is no power for the circuit to work.

b)

The switch is open, so the circuit is broken.

c)

The third light bulb, that is needed to complete the circuit.

d)

The wires are not connected properly.