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Edexcel IGCSE Physics 2.2 Electrical Safety Devices Questions

Practise explaining how fuses, earth wires, circuit breakers and insulation protect users and domestic appliances when faults or large currents occur.

Syllabus
First assessment 2019
Course
Physics 4PH1

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

Edexcel IGCSE Physics 2.2 Electrical Safety Devices Questions question 1

[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

Question (a)

(a)

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

[ 1 ]

Question (b)

(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 ]

Question (c)

(c)

Explain how a fuse protects a domestic appliance.

[ 3 ]
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