Physics

Joule Heating Calculator

Find the heat generated by current in a resistor.

Current (A)

Resistance (Ω)

Time

Calculated Output

Heat generated (J) 2,400

Power (W) 40

Formula: Q = I²·R·t

Step-by-Step Breakdown

1. Values used:

2. Current = 2 A

3. Resistance = 10 Ω

4. Time = 60

6. Heat generated = 2,400J

7. Power = 40W

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The math behind it

Q = I²·R·t. The power dissipated is I²·R.

2 A through 10 Ω for 60 s → 2400 J (40 W).

Where is it useful?

Electric heaters, toasters and incandescent bulbs all rely on Joule heating.