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Byju's Answer

Standard X

Physics

Three Pin Plug

Electric fuse...

Question

Electric fuse wire is made from an alloy having high melting point.

True

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False

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Solution

The correct option is B False
In a circuit, as the current flows through the fuse, its temperature rises and if the amount of current exceeds the standard value, then the fuse is required to melt in order to break the circuit.
So, an electric fuse material having a low melting point is utilized.
Most commonly tin and the lead alloy are used in electric fuses because of the low melting point as well as high resistance.
Hence, the given statement is false.

Suggest Corrections

Similar questions

Select the correct alternative:

(a) All wires used in electric circuits should be covered with:

(i) colouring material

(ii) conducting material

(iii) an insulting material

(iv) none of the above.

(b) Electrical work done per unit time is:

(i) electrical energy

(ii) electric current

(iii) electric voltage

(iv) electric power

(i) 100 watt (ii) 1000 watt

(iii) 10 watt (iv) none of the these.

(d) Fuse wire is an alloy of :

(i) tin-lead (ii) copper-lead

(iii) tin-copper (iv) lead-silver

(e) A fuse wire should have :

(i) a low melting point

(ii) high melting point

(iii) very high melting point

(iv) none of the above.

(f) When the switch of an electric appliance is put off, it disconnects:

(i) the live wire

(ii) the neutral wire

(iii) the earth wire

(iv) the live and the neutral wires.

(g) The purpose of an electric meter in a house is :

(i) to give the cost of electricity directly

(ii) to give the consumption of electrical energy

(iii) to safeguard the circuit from short circuiting

(iv) to put on or off the mains.

(h) If out of the two lighted bulbs in a room, one bulb suddenly fuses, then:

(i) other bulb will glow more

(ii) other bulb will glow less

(iii) other bulb will also fuse

(iv) other bulb will remain lighted unaffected.

Q. Assertion :Heater wire must have high resistance and high melting point. Reason: If resistance is high, the electric conductivity will be less.

Fuse wire has a _________ melting point and is made of alloy of ________ and _________. If the current in the circuit rises too high, the fuse wires ________.

Q. Fuse wire is made up of an alloy of ................ which has high resistance and ............. (High/Low) melting point.

Q. The material used in making the wire of an electric fuse should have a high melting point.

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