Question

Which of the following statements are correct?

1. (i) Tin-lead alloy is used for making fuse wires.
2. (ii) Fuse is connected to the live wire.
3. (iii) The material chosen for making fuse should have a high melting point.

• A. 2 only
• B. None of these
• C. 1, 2
• D. All

Answer 1

Answer:

C. 1, 2

Statements (i) and (ii) are correct, as tin-lead alloy is used in fuse wires and the fuse is connected to the live wire. However, the fuse should have a low melting point,not high The material used for the electric fuse is an alloy of tin and lead. This alloy should have high resistivity to avoid loss of current. And the low melting point, so that in case of short-circuit, the fuse wire will melt with a slight change in temperature