Safety fuse should have 1 Low Resistance 2 High Resistance 3 ...........

Science Affairs Physics

Download Solution PDF

Safety fuse should have:

1. Low Resistance

2. High Resistance

3. Low Melting point

4. High Melting point

5. Connection in parallel to line

6. Connection in series to line

Choose the correct options:

1, 3 and 6

1, 3 and 5

2, 3 and 5

2, 3 and 6

छोटे Courses बड़े Results

Master Physics

Prepare through Micro-courses

Try Now

Explanation:

Only codes 2,3&6 are correct.

Fuse is an electrical safety device designed to protect an electrical circuit from overcurrent damage. An electric fuse is a small, easily ignitable wire that is inserted for protection into an electrical circuit. The fuse has high resistivity and a low melting point.

Properties of fuse

Low melting point: The meting point of fuse wire should low so that it can melt immediately when excess current flow through it. As soon as the safe current limit is exceeded in an electrical circuit, the fuse "blows," cutting off the power.
Connection in series to the line: It is used in a series of equipment as a safety device which means that a fuse wire must have high resistivity and low melting point.
Material used: The material used for making a fuse wire is an alloy of lead and tin.

Hence option 4th is correct.