Question

Read the given passage and answer the following questions:

The home electrical connection consists of ‘live’, ‘neutral’ and ‘earth’ wires. The ‘live’ and the

‘neutral’ wires have potential difference of 220 V. The ‘earth’ is connected to ground. Due to a fault

in the equipment or if the plastic coating on the ‘live’ and the ‘neutral’ wires gives a way the two

wires come in contact with each other and a large current flows through it producing heat. If any

inflammable material (such as wood, cloth, plastic, etc.) exists around that place it can catch fire.

Therefore a fuse wire is used as a precautionary measure.

a. Name the two wires having potential difference of 220 V.

b. What is short circuit?

c. Write the function of a fuse​

Answer 1

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✹ Out of the three wires we found in a normal house wiring, The 'live' wire and the 'neutral' wire have a potential difference of 220 V.

✹ When due to fault plastic coating and wiring system of the house, if the live and neutral wire get to come in contact with each other, then they might caught fire and if any kind of in flammable substance is nearby then it can caught fire.

✹ Fuse is used as precautionary measure to prevent such electric hazards. As soon as the safe limit of current exceeds, the fuse "blows" and the path of current is cut off. It is made to melt at a definite current.

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The wiring system of our home is also known as Domestic house wiring. We get the electricity or power supply from overhead electric poles or other sources.

• The Wire which is covered with red insulation is known as Live wire.
• The wire which is covered with black insulation is known as Neutral wire.
• These wires pass into the elctric metre board through a main fuse.

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Answer 2

Answer:

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