Why is fuse wire used in electric circuits?

To increase the current flow in the circuit.

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For the protection of electrical appliances and circuit.

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To prevent insulation.

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To increase the voltage.

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Solution

The correct option is D. For the protection of electrical appliances and circuit.
Fuse wire(a thin wire) is used in electric circuits to prevent the excess current flowing into the circuit, thereby preventing the appliances from getting damaged. This happens when an excess current passes through the fuse wire (it has a low melting point), due to the heating effect of current it melts and breaks the circuit before it could pass through the appliance, and damage it.

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Similar questions

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.

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.

Q. To protect the electrical appliances the fuse wire in electric supply line is connected in

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

Q. Why is fuse wire used in electric circuits?

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