# How to Find Power Dissipated by a Resistor?

Are you struggling to calculate the power dissipated by a resistor in your circuit? Don’t worry, you’re not alone. Many people find this concept confusing, but it’s actually quite simple once you understand the formula. In this post, we’ll guide you through the process of finding the power dissipated by a resistor and provide helpful tips to make your calculations easier.

Now, let’s dive into the details of How to Find Power Dissipated by a Resistor:

## How to Find Power Dissipated by a Resistor

When working with electronic circuits, it’s important to know how much power is being dissipated by each component. This information can help ensure that your circuit operates safely and efficiently.

To calculate the power dissipated by a resistor, you need to know two things: the voltage across the resistor and the current flowing through it. Once you have these values, simply use Ohm’s Law (P = V * I) to calculate the power.

Let’s walk through an example. Say we have a 10 ohm resistor connected to a 12V battery. The current flowing through the resistor is 1A. To find the power dissipated by the resistor, we would use this formula:

P = V * I P = 12V * 1A P = 12W

So our answer is that this particular resistor is dissipating 12 watts of power.

It’s important to note that as resistors heat up, their resistance can change slightly which will affect their power dissipation. Additionally, if multiple resistors are connected in series or parallel in your circuit, you’ll need to use different formulas to find their total power dissipation.

## Summary

• To find the power dissipated by a resistor in your circuit, use Ohm’s Law (P = V * I).
• Make sure you know both the voltage across and the current flowing through your resistor.
• Be aware of any changes in resistance due to temperature.
• For circuits with multiple resistors connected in series or parallel, use different formulas to find total power dissipation.

By following these steps and keeping these tips in mind, you’ll be able to confidently calculate the power dissipated by any resistor in your electronic circuit.