Question

iv. A _________ wire is used to protect domestic appliances.

a. live b. neutral c. fuse d. tungsten​

Answer 1

Answer:

An electrical fuse works by breaking the circuit when there is a fault in an appliance that causes too much current to flow. The wire within the circuit melts due to the heat generated when the current going through the circuit is too great.

In this way,fuse wire protect electrical appliances.

Resistance depends up on Resistivity, length of wire and its area of cross section.

R=

A

ρl

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Answer 2

A fuse wire is used to protect domestic appliances.

• Fuse wire has a very low melting point. Whenever excessive current (which is potentially dangerous for appliances) flows through the fuse wire, the excessive heat (associated with the excessive current flow) melts the fuse wire.
• The melted fuse wire breaks the circuit. And, excessive current flow is stopped. In this way, the appliances are being protected by the fuse wire.
• Furthermore, this fuse wire is generally made of an alloy of lead and tin.
• The options like - live, neutral, tungsten are incorrect in this case.