Two bulbs are rated as 220 V-100W and 220 V-60 W. How much power will be consumed when both of them are connected in series across the supply of 220 V ?

Explanation

To solve the problem of finding the power consumed when two bulbs rated at 220 V-100 W and 220 V-60 W are connected in series across a 220 V supply, we can follow these steps:

### Step 1: Calculate the Resistance of Each Bulb
Using the formula for power, \( P = \frac{V^2}{R} \), we can rearrange it to find the resistance \( R \):
\[ R = \frac{V^2}{P} \]

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