Electricity and magnets revision

Which of the following need electricity to work ?

• Refrigerator

• Table

• Laptop

• Pen

A/An ____________ is a material that electricity CANNOT pass through easily.

• Conductor

• Insulator

• wire

• switch

Material that electricity CAN pass through easily is called a/an ________________.

• conductor

• insulator

Which of the following is an insulator?

• copper

• aluminum

• steel

• rubber

Which of the following is a conductor?

• glass

• copper

• plastic

• rubber

Which of these does not conduct electricity

• brass spoon

• silver jewellery

• steel tumbler

• plastic jug

In an electric torch, electric energy is converted into

• light energy

• both light and heat energy

• sound energy

• heat energy

You are a scientist who has to make a satellite to send into orbit in outer space.Which of these will you use as a source of power in the satellite.

• dry cell

• solar cell

• rechargeable cells of the type used in cars.

• hydro electricity

Metals are ________of electricity.

• good conductors

• bad conductors

In a dry cell, the end with the metal cap is the ____terminal.

• positive

• negative