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Everyday Physics · Question 48 of 68

Question 48

EasyOriginal question

A fuse protects the wiring of a house because it

Options for question 48

Show the answer and explanation
CorrectNot quiteAnswer C

Correct answer: C

Explanation

  1. A fuse is a short wire of low melting point in series with the circuit.

  2. An overload or short circuit heats it until it melts, cutting off the current before the house wiring overheats.

Worth noting

Earthing is a separate safety measure that carries leakage current from a metal body to the ground.

Concept
How a fuse works
Typical time
35 s
Your time
—
The rule this testsElectricity and magnetism
Practise this chapter →

Ten questions from Everyday Physics, at your own pace.

Practise this chapter →

Ten questions from Everyday Physics, at your own pace.