Resistor Heat Calculator

Resistor Heat Calculator calculator can be used to calculate the power dissipation and heat generated by a resistor in an electrical circuit.

Input Parameters

Calculation Results

Calculation Formula

P = I²R

Where:
P = Power dissipation (W)
I = Current (A)
R = Resistance (Ω)

Resistor Heat Calculator Calculator Usage Guide

Learn how to use the Resistor Heat Calculator calculator and its working principles

How to Use the Resistor Heat Calculator

The Resistor Heat Calculator helps you calculate the power dissipation and heat generated by a resistor in an electrical circuit. Follow these steps to use the calculator:

  1. Enter the resistance value of the resistor in ohms (Ω).
  2. Enter the current flowing through the resistor in amperes (A).
  3. Click the "Calculate" button to compute the power dissipation.
  4. The calculated power dissipation will be displayed in watts (W).

Working Principle

The power dissipation in a resistor can be calculated using the formula:

P = I²R

Where:

  • P is the power dissipation in watts (W).
  • I is the current flowing through the resistor in amperes (A).
  • R is the resistance of the resistor in ohms (Ω).

Example

If a resistor with a resistance of 100 ohms (Ω) has a current of 2 amperes (A) flowing through it, the power dissipation can be calculated as follows:

P = (2 A)² × 100 Ω = 4 W

This means the resistor will dissipate 4 watts of power, which can generate heat.