PSC Year 9 Electricity Quiz

Selection the option that shows the symbol and units for electric current?

• V, volts

• I, amps

• I, ohms

• R, volts

Selection the option that shows the symbol and units for resistance?

• R, volts

• R, ohms

• R, amps

• I, ohms

What type of electrical component is shown in the diagram?

• Photoresistors

• Thermoresistors

• LEDs

• Incandescent globes

What type of electrical component is shown in the diagram?

• LEDs

• Globes

• Diodes

• Resistors

A material that restricts the flow of charged particles is called:

• A conductor

• An insulator

• A metal

• A wire

If you added another globe to the circuit in the diagram, all of the globes would:

• Glow more brightly

• Show no change in brightness

• Glow less brightly

What is happening in this picture?

• The balloon is attracted to the girl's hair because they are both negatively charged

• The balloon is attracted to the girl's hair because they are both positively charged

• The negatively charged balloon is attracted to the girl's hair because they have opposite charges

Tags

NGSS.MS-PS2-3

True or False? Current is the rate of flow of electrons, and is measured with an ammeter.

• True

• False

This is an image of a fuse. Why do circuits often contain a fuse?

• To allow all components to function regardless of current

• To provide a steady flow of current in the home

• To light up without losing heat to the surroundings

• To protect humans and appliances against a power surge

Tags

NGSS.MS-PS3-5

This is the symbol for:

• A closed switch

• An open switch

• A resistor

• A light globe