energy dissipated

Question

Energy dissipated in resistor R over time t with steady current I?

RankGuru · Accepted Answer

1. **Joule's Law of Heating**: The heat energy ($H$) developed in a conductor is proportional to the square of the current, the resistance, and the time of flow.
2. **Formula**: $H = VIt$ (Energy = Voltage $	imes$ Charge).
3. **Apply Ohm's Law**: Substituting $V = IR$:
   - $H = (IR)It = I^2 R t$
4. **Alternative**: $H = \frac{V^2}{R} t$
5. **Unit**: The energy is measured in Joules (J).

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energy dissipated

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