Electric Circuits Quiz

Study the three electric circuits below. In which of the circuits, A, B or C, will the bulb light up?

• A and B

• A and C

• B and C

• A, B and C

At which two steel buttons should the circuit tester be connected so that the bulb can light up?

• U and X

• U and Z

• W and X

• W and Z

Which of the following shows bulbs A, B and C arranged from the brightest to the dimmest?

• A, B, C

• A, C, B

• C, B, A

• C, A, B

Belle wants to find out how the number of batteries affects the brightness pf the bulbs in an electric circuit. She sets up the following circuits using identical bulbs, batteries and wires.

Which circuits should Belle use to ensure a fair test?

• A and B

• A and C

• B and D

• C and D

The following diagrams show what happens when didfferent types of materials, P, Q, R and S, are connected in a circuit.

Which materials, P, Q, R, and S, are electrical insulators?

(There may be more than 1 answer.)

• P

• Q

• R

• S

If a bulb does not light up when a material is connected in a circuit, what does this tell you about the material?

• The material is a conductor.

• The material is an insulator.

• The material is a battery.

• The material is a light bulb.

Aileen sets up the circuit shown using materials P, Q, R, and S.

P and S are electrical conductors.

Which bulb(s), B1, B2, or B3, will light up in this circuit?

• Only B1

• Only B2

• Only B3

• B1 and B3

What will happen to the other bulbs if bulb B fuses in Circuit X?

• All the other bulbs will go out.

• Only bulb C will go out, but A will stay lit.

• Only bulb A will go out, but C will stay lit.

• The other bulbs will remain lit.

What will happen to the other bulbs if bulb B fuses in Circuit Y?

• All the other bulbs will go out.

• Only bulb A will go out.

• Bulb A and C will remain lit.

• Only bulb C will go out.

If bulbs A, B, and C are arranged in a circuit as shown, what is the smallest number of bulbs that will remain lit if one of the bulbs in the circuit fuses?

• 0

• 1

• 2

• 3