Edexcel IGCSE Physics 2.2 Electrical Safety Devices Questions

Earthing and double insulation reduce shock risk; a fuse or circuit breaker disconnects the supply when excessive current flows. Know where the fuse goes and why breakers can be reset.

Exam points

explain how an earth wire carries fault current and trips a circuit breaker
compare fuses and circuit breakers using reset time, replacement and current cut-off
state where a fuse is placed in a mains appliance circuit, including the live wire

[Maximum number: 6]

The photograph shows a hair dryer plugged into the mains supply.
The hair dryer contains a fuse.

Figure for Question Edexcel IGCSE Physics 2.2 Electrical Safety Devices Questions question 1 — Edexcel IGCSE Physics

(a)

State which wire in the hair dryer should be in series with the fuse.

[ 1 ]

(b)

The fuse is an electrical safety feature used in mains-operated domestic appliances.

State two other electrical safety features that can be used in mains-operated domestic appliances.

1

2

[ 2 ]

(c)

Explain how a fuse protects a domestic appliance.

[ 3 ]

All question bank results loaded

Edexcel IGCSE Physics 2.2 Electrical Safety Devices Questions question 1

Question (a)

Question (b)

Question (c)