Are you wondering how much power is dissipated by each light bulb such as that of your Lumen light bulb? If so, then you’re not the only one who’s trying to figure this out. From school works to engineering tasks, this question is often asked. Who knew this could be vital in our day to day life? The good thing is that the steps to calculating this are quite simple.

So, grab some pen and paper and take down some notes because you’ll need it. Without further ado, below is a guide that will explain what materials you’ll need to achieve this and the steps on how the calculation goes.

What You Will Need

Preparing-the-needed-materials-is-vital-so-that-you-can-calculate-smoothly Beginner’s Guide: How Much Power is Dissipated by Each Light Bulb

Preparing the needed materials is vital so that you can calculate smoothly

First of all, you can’t know how much power is dissipated by each light bulb when you’re not prepared and don’t have the necessary materials to calculate it. That’s why you’ll need these before starting:

  • Pen or Pencil – You’ll need this as you’re going to write down a lot of formulas. Unless you’re some kind of an expert or you have a super memory, you’ll need a pen or pencil to jot down all of the needed equations for this.
  • Paper – Of course, a piece of paper should be paired with your pen and pencil. Make sure that you get a piece that’s clean so that you’ll have a lot of space to write on, especially when you’re not that good at calculating, and you tend to make errors all of the time.
  • Calculator – Of course, lastly, you’ll need a calculator. While some can do the math without it, it’s still ideal to have this by your side. It makes calculating much more accurate and faster. So, if you want to have a precise answer, prepare one.
  • Formula – Lastly, you’ll need to have the formulas. The formulas will be provided on the steps below.

Step-by-Step Guide on How to Calculate the Power Dissipated by Each Light Bulb

It’s-important-to-know-how-to-calculate-how-much-power-is-dissipated-in-a-light-bulb-especially-when-you’re-working-in-this-kind-of-field Beginner’s Guide: How Much Power is Dissipated by Each Light Bulb

It’s important to know how to calculate how much power is dissipated in a light bulb, especially when you’re working in this kind of field

Now that you’re all set, you can now begin. Follow the steps below to know how much power is dissipated in a light bulb’s resistor:

Step 1: First, you’ll have to use Ohm’s law so that you can find out what the resistor’s current is. The formula is (V = I x R). Take note of what you light bulb’s voltage is (V) and what its resistor is (R). To find I, you can follow this formula: (I = V/R = V/100)

Step 2: Then, you’ll have to find the power dissipated by the resistor. The formula for this is (P = I x V).

Step 3: Now that you have everything, you can now calculate how much power is dissipated by your light bulb.

This is the most basic method of calculating the power dissipated by each light bulb. It’s a simple step-by-step guide that you can definitely follow. However, as this is quite a complex topic, it would also help if you’re going to do research more. After all, there are a lot of varieties and considerations regarding this, so don’t end your research by just using this method. Do explore more so that you’re going to be more informed and knowledgeable and don’t forget to be mindful of safety all the way.


Did you enjoy computing? Knowing how much power dissipated by each light bulb may not be your most conventional skill, but it surely helps, especially when you’re in a related field. Do you think there are other ways to calculate it? Comment below, and you like it, don’t hesitate to share it with your friends.

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