Home / iGCSE Physics (0625) – 4.4 Electrical safety Paper 2 -2023,2024&2025

iGCSE Physics (0625) – 4.4 Electrical safety Paper 2 -2023,2024&2025

Question

An electric heater is plugged into the mains supply using a fused plug.

The current in the heater is 10 A.

The cable attached to the heater is rated at 15 A.

The fuses available are rated at 1 A, 3 A, 5 A and 13 A. Which fuse should be used?

A 1 A

B 3 A

C 5 A

D 13 A

Answer/Explanation

Ans: D

Question

After some building work in a house, a bare (uninsulated) live wire is left protruding from a wall.

What is the greatest hazard?

A. a fire

B. a fuse blows

C. an electric shock

D. no current flows

Answer/Explanation

Ans: C

Question

In this circuit, a component at X automatically protects the wiring from overheating if there is a

fault.

                               

Which row indicates components that are suitable?

                 

Answer/Explanation

Ans: B

Question

Which circuit contains a fuse?

         

Answer/Explanation

Ans: C

Question

The circuit shows a battery and four lamps. All the lamps are lit.

One lamp fails and all the lamps go out.

Which lamp failed?

             

Answer/Explanation

Ans: A

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