Calculate the current through a 60 W lamp rated for 250 V. If the line voltage falls to 200 V, how is the power consumed by the lamp affected ?

Explanation

To solve the problem step by step, we will follow these calculations:

### Step 1: Calculate the current through the lamp at rated voltage

We know the formula for power (P) in terms of current (I) and voltage (V):
\[ P = I \times V \]

We can rearrange this formula to find the current:
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