Question 1

Which of the following is not an effect of an electric current?

Accepted Answer

Sound effect

Answer

Heating effect

Answer

Magnetic effect

Answer

Chemical effect

Question 2

Which of the following is not an application of the chemical effect of electricity?

Accepted Answer

Electric car

Answer

Electrolysis

Answer

Electroplating

Answer

Extraction of metals

Question 3

Which of the following is not an application of the magnetic effect of electricity?

Accepted Answer

Connecting cables

Answer

Loud speakers

Answer

Motors

Answer

Maglev trains

Question 4

Which of the following is not an application of the heating effect of electricity?

Accepted Answer

Air conditioner

Answer

Water heater

Answer

Electric iron

Answer

Hair dryer

Question 5

A microphone is used together with loud speakers so that people can still hear in a large gathering. 
State the effect that is applied in a microphone?

Accepted Answer

Magnetic effect

Answer

Lighting effect

Answer

Chemical effect

Answer

Heating effect

Question 6

An electric motor is connected to the mains supply. The insulation covering the wires becomes damaged.

Why is this damage dangerous?

Accepted Answer

The user of the motor might receive an electric shock.

Answer

It might not be possible to turn the motor off.

Answer

The motor might overheat and catch fire.

Answer

The fuse in the circuit might melt.

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