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Byju's Answer

Standard VIII

Physics

Domestic Electric Circuits

When the main...

Question

When the mains switch of the house is put off, it disconnects:

live wire

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neutral wire

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earth wire

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live and neutral wires

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Solution

The correct option is D live and neutral wires
On switching off the mains switch of the house, live and neutral wires are disconnected in order to break the circuit.

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Similar questions

Q. explain why all the electric appliances in a house stop working when main switch is put off .

Q. When the switch of an electric appliance is turned off, it disconnects:

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 main fuse is connected in :

(a) live wire

(b) neutral wire

(d) both the earth and neutral wires.

State one advantage of using the main switch in house wiring.

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When the mains switch of the house is put off, it disconnects:

The correct option is D live and neutral wiresOn switching off the mains switch of the house, live and neutral wires are disconnected in order to break the circuit.

The correct option is D live and neutral wires
On switching off the mains switch of the house, live and neutral wires are disconnected in order to break the circuit.