Which of the following is false about fuse?

A fuse controls the current that flows to the appliance.

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A fuse increases the resistance in the circuit to minimize the current flow.

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A fuse allows high current to flow through the circuit without damaging the appliance.

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A fuse protects the wiring and the appliance in the circuit from overheating.

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Solution

The correct options are
A A fuse increases the resistance in the circuit to minimize the current flow.
C A fuse protects the wiring and the appliance in the circuit from overheating.
D A fuse allows high current to flow through the circuit without damaging the appliance.
A fuse is usually a thin piece of wire that will melt and break the circuit if too large a current flows through it. The thicker the wire the more current is needed to melt it and the higher the 'rating' of the fuse. The purpose of a fuse is to protect the wiring and the equipment from getting high current.

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Similar questions

How does a fuse protect the electric wiring (or an appliance) from being damaged?

Write true or false for each statement:

(a) A fuse wire has a high melting point.

(b) Flow of protons constitutes electric current.

(d) S.I. unit and commercial unit of electrical energy are same.

(e) Overloading of electric current in circuits can lead to short circuiting.

(f) Our body can pass electricity through it.

(g) The metallic cases of all appliances are insulators of electricity.

(h) The earth wire protects us from an electric shock.

(i) A switch should not be touched with wet hands.

(j) All electrical appliances in a household circuit work at the same voltage.

(k) In a cable,the green wire is the live wire.

(l) A fuse is connected to the live wire.

(m) A switch is connected to the neutral wire.

Fuse is a safety device used in circuits which prevents damage to electrical appliances and avoids fire.

Define the term current rating of an electric fuse. Name the material used to make electric fuse and also name two safety measure commonly used in electric circuit and appliances.

Complete the following sentences :

(a) A fuse is a short piece of wire of high ___ and of the material of low ___.

(b) A fuse wire is made of an alloy of ___ and ___ if the current in a circuit exceeds the current rating of the fuse wire, it ___.

(d) Higher the current rating, ___ is the fuse wire.

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