Question

A fuse wire is connected in _____ before the switch.

• A. Neutral wire
• B. Earth wire
• C. Live wire
• D. Either (a) or (c)

Answer 1

The correct option is C

Live wire

Explanation for correct options:

1. (c) Live wire
2. If, due to any reason, excess current flows through the live wire, then fuse wire melts automatically and it protects the appliance from damage.
3. So a fuse wire is connected in live wire before the switch.

Explanation for incorrect options:

1. (a) Neutral wire: If a neutral wire is connected to the fuse, then even after burning of the fuse, the appliance will continue to receive the current from live wire and damage the appliance.
2. (b) Earth wire has no resistance, hence if it is connected to the fuse, the huge current will flow through the appliance and damage the appliance.

Hence, Option (c) Live wire is the correct answer.