Year 9 Electricity Quiz

Which of the following is an example of a conductor?

• Wood

• Rubber

• Copper

• Glass

What is an example of an insulator?

• Aluminum

• Paper

• Silver

• Copper

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

Which quantity cannot be changed by altering the wires and resistors of a circuit?

• The voltage of the power supply

• The current through the whole circuit

• The total resistance of the circuit

• The total charge that flows in the circuit.

If the voltage in a circuit is 12 volts and the resistance is 4 ohms, what is the current?

• 3 A

• 16 A

• 48 A

• 0.33 A

If the current in a circuit is 0.5 A and the resistance is 10 ohms, what is the voltage?

• 5 V

• 50 V

• 0.05 V

• 20 V

How can you calculate the resistance of a circuit from the gradient of a Voltage-Current graph?

• Resistance = Voltage / Current

• Resistance = Voltage × Current

• Resistance = Change in Voltage / Change in Current

• Resistance = 1 / (Voltage × Current)

In a series circuit with three light globes, how does adding more light globes affect the brightness of each globe?

• Adding more globes makes all of them brighter.

• Adding more globes makes all of them dimmer.

• Adding more globes has no effect on their brightness.

• The first globe gets brighter, but the others get dimmer.

In a parallel circuit with three light globes, how does adding more light globes affect the brightness of each globe?

• Adding more globes makes all of them brighter.

• Adding more globes makes all of them dimmer.

• Adding more globes has no effect on their brightness.

• The first globe gets brighter, but the others get dimmer.

If one light globe in a series circuit burns out, what happens to the other globes?

• All other globes go out.

• None of the other globes are affected.

• The other globes get brighter.

• The other globes get dimmer.

If one light globe in a parallel circuit burns out, what happens to the other globes?

• All other globes go out.

• None of the other globes are affected.

• The other globes get brighter.

• The other globes get dimmer.