Joule Heating Calculator
Compute heat generated by a conductor using Q = I² R t.
How to Use This Calculator
Enter Current
Type the electric current in amperes (A).
Enter Resistance
Provide the resistance of the conductor in ohms (Ω).
Enter Time
Set the time duration in seconds (s) during which current flows.
Get Heat in Joules
Click Calculate to compute Q in joules (J).
Formula
Q = I² × R × t
where Q is heat in joules (J), I is current (A), R is resistance (Ω), t is time (s).
Example:
I = 2 A, R = 10 Ω, t = 60 s
Q = 2² × 10 × 60 = 2400 J
About Joule Heating Calculator
This tool calculates the heat generated in a resistive element due to current flow, based on Joule's law.
When to Use This Calculator
- Circuit design: Estimate heat dissipation in resistors.
- Thermal analysis: Check power-to-heat conversion over time.
- Safety: Ensure components stay within temperature limits.
- Education: Demonstrate Joule's law.
Why Use Our Calculator?
- ✅ Accurate: Uses the standard I²Rt relationship.
- ✅ Fast: Instant results with clear units.
- ✅ Mobile Friendly: Works on any device.
- ✅ Free: No signup required.
Frequently Asked Questions
Is the result power or energy?
This calculator outputs energy (heat) in joules. Power would be P = I²R (watts).
Can I enter milliseconds or minutes?
Enter time in seconds. Convert units before input (e.g., 2 minutes = 120 s).
Does temperature affect resistance?
Yes, but this basic model assumes constant R. For precision, use temperature-adjusted resistance.
What if current varies with time?
This tool assumes constant current. For varying current, integrate I²R over time.