A fused bulb does not glow. Why?

Explanation

### Step-by-Step Solution:

1. **Understanding the Bulb**: A bulb consists of a filament that glows when electricity passes through it. The filament is a thin wire made of a material that can heat up and emit light when an electric current flows through it.

2. **What Happens When a Bulb Fuses**: A fused bulb means that the filament inside the bulb has broken. This is often due to excessive current flowing through the filament, causing it to overheat and break.

3. **Effect of a Broken Filament**: When the filament breaks, it creates an open circuit. An open circuit means that there is a break in the path through which electricity can flow.

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