An electric heater of resistance `8 Omega` draws `15 A` from the service mains for `2` hours. Calculate the rate at which heat is developed in the heater.

Explanation

To solve the problem of calculating the rate at which heat is developed in the electric heater, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Given Values:**
- Resistance (R) = 8 Ω (Ohms)
- Current (I) = 15 A (Amperes)
- Time (t) = 2 hours (not needed for power calculation)
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