1. What is the Heat Equation for Two Resistors?

The heat equation calculates the thermal energy generated when electric current passes through two resistors. It's based on Joule's first law, which states that heat produced is proportional to the square of the current, the resistance, and the time.

2. How Does the Calculator Work?

The calculator uses the heat equation:

Where:

• \( I \) — Current in amperes (A)
• \( R \) — Resistance in ohms (Ω)
• \( t \) — Time in seconds (s)
• \( 2 \) — Factor for two identical resistors

Explanation: The equation calculates the energy dissipated as heat by two identical resistors in a circuit.

3. Importance of Heat Calculation

Details: Calculating heat generation is crucial for circuit design, preventing component overheating, and ensuring electrical safety.

4. Using the Calculator

Tips: Enter current in amperes, resistance in ohms, and time in seconds. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Why is current squared in the equation?
A: Heat generation is proportional to the square of current according to Joule's law (P = I²R).

Q2: What if the resistors have different values?
A: For different resistors, calculate heat for each separately (I²R₁t + I²R₂t) and sum the results.

Q3: Does this account for heat dissipation?
A: No, this calculates total heat generated, not accounting for any heat lost to the environment.

Q4: What units does the result use?
A: The result is in joules (J), the SI unit of energy.

Q5: Can this be used for AC circuits?
A: For AC, use RMS current values for accurate heat calculations.