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Byju's Answer

Standard VII

Physics

Electric Bulb and Electric Fuse

Fuse wire has...

Question

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 ____.

High, lead, tin, melt

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Low, lead, tin, melt

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Low, lead, aluminium, melt

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High, lead, aluminium , melt

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Solution

The correct option is B
Low, lead, tin, melt

Fuse wire has a low melting point and is made of alloy of lead and tin. If the current in the circuit rises too high, the fuse wires melt.

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Similar questions

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.

Q. undefined

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.

The fuse wire has a low melting point.

Q. If the current in a circuit rises too high, the fuse wire will ?

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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 ________.

The correct option is B Low, lead, tin, meltFuse wire has a low melting point and is made of alloy of lead and tin. If the current in the circuit rises too high, the fuse wires melt.

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 ____.

The correct option is B
Low, lead, tin, melt

Fuse wire has a low melting point and is made of alloy of lead and tin. If the current in the circuit rises too high, the fuse wires melt.