A 25 W lamp is connected to an ac source of peak emf 100 V. Compute the rms current in the lamp.

Explanation

To solve the problem of finding the rms current in a 25 W lamp connected to an AC source with a peak emf of 100 V, we can follow these steps:

### Step 1: Understand the relationship between power, voltage, and current
For a resistive load (like a lamp), the average power (P) consumed can be expressed as:
\[ P = I_{\text{rms}} \cdot V_{\text{rms}} \]
where:
- \( P \) is the power in watts (W),
- \( I_{\text{rms}} \) is the rms current in amperes (A),
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