Question

Electric fuse is a protective device which protects electrical equipment in the
circuit by breaking the circuit when there is a short circuit. It contains a fuse
wire which has low resistance, it allows normal current pass through it safely
but if there is any short circuit, fuse will blow out i.e fuse wire cant withstand
the heat produced by that current(infinite current) so it melts and breaks the
circuit. Thus, protecting other electrical devices from short circuit current. The
fuse wire is made of zinc, copper, silver, aluminum, or alloys to provide stable
and predictable characteristics. Fuse should be of low resistance and low
melting point as per the requirement current rating for overcurrent protection.

This is how a normal fuse looks like. You can see the fuse wire in it. After
short circuit the fuse wire should be replaced by a new wire which is available
in the market.
Answer the questions
1. Which of the following is correct?

a) Fuse wire is a protective device b) fuse wire is a safety device
b) Fuse wire is an ornamental device d) both a and b 1 mark
2. State whether true or false. “ There are different types of fuse wires
depending upon the current requirements in a circuit” 1 mark
3. State the reasons why the fuse holder is made of Ceramic materials? 1 mark

Answer 1

Answer:

1. A. Fuse wire is a protective device

2. true

Answer 2

Explanation:

1. A. fuse wire is protective

2.true