Quiz on Electric Current and its Effects

What is the heating effect of electric current?

• It can make a wire red hot

• It causes the circuit to glow

• It has no effect on the circuit

• It cools down the circuit

What does a longer line in the symbol for a cell represent?

• Fuse

• Battery

• Positive terminal

• Negative terminal

What is the combination of two or more cells called?

• Circuit

• Conductor

• Fuse

• Battery

What happens to a compass needle when current passes through a wire?

• It stays in the same position

• It deflects from its north-south position

• It glows

• It breaks

Which device is based on the heating effect of electric current?

• Switch

• Electric bell

• Fuse

• Battery

What will happen if the switch in a circuit is closed but there is no battery?

• Nothing will happen

• The compass will deflect

• The bulb will glow

• The circuit will short circuit

Can an electromagnet be used to separate plastic bags from a garbage heap?

• No, it can only attract metals

• Yes, it can repel plastic

• No, plastic is not magnetic

• Yes, it can attract plastic

What should be used to replace a fuse in a circuit?

• A battery

• A switch

• Another fuse

• A piece of wire

What is the effect of electric current on a straight conductor?

• It makes it a permanent magnet

• It has no effect

• It can break the conductor

• It can convert it into a temporary magnet

What happens when the electric current through a fuse exceeds a certain limit?

• The switch breaks

• The battery charges

• The circuit glows

• The fuse wire melts