Question

Give reason: An electric bulb gets fused when it is connected across a supply of voltage higher than its rating.

Answer 1

1. When a bulb is connected to a higher voltage, it would draw more current than its proper value of current.
2. When more current will flow through it, it will get heat up more.
3. Its temperature will become high than its permitted limit.
4. Hence, the bulb will get fused or its filament will get melt.

Hence, An electric bulb gets fused when it is connected across a supply of voltage higher than its rating.