A `100W` and a `500W` bulbs are joined in series and connected to the mains which bulb will glow brighter?

Explanation

To determine which bulb will glow brighter when a 100W and a 500W bulb are connected in series, we can follow these steps:

### Step 1: Calculate the resistance of each bulb
The power rating of a bulb is given by the formula:
\[ P = \frac{V^2}{R} \]
Where:
- \( P \) is the power (in watts),
- \( V \) is the voltage (in volts),
...