Enter the current (amps) and up to 3 different resistances (ohms) into the calculator to determine the Total Power.

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## Total Power Formula

The following formula is used to calculate the Total Power.

**Pt = I^2*R1+I^2*R2+I^2*R3**

- Where Pt is the Total Power (watts)
- I is the current (amps)
- R1 is the up to 3 different resistances (ohms)

## How to Calculate Total Power?

The following two example problems outline how to calculate the Total Power.

**Example Problem #1:**

- First, determine the current (amps). In this example, the current (amps) is measured to be 10.
- Next, determine the different resistances (ohms). For this problem, the different resistances (ohms) are calculated to be 50,30, and 20.
- Finally, calculate the Total Power using the formula above:

Pt = I^2*R1+I^2*R2+I^2*R3

Inserting the values from above and solving the equation with the imputed values gives:

Pt = 10^2*50+10^2*30+10^2*20 = 10,000 (watts)

**Example Problem #2: **

Using the same process as example problem 1, we first define the variables outlined by the formula. In this case, the values are:

current (amps) = 50

3 different resistances (ohms) = 6,7,8

Entering these values into the formula or calculator above gives us:: Pt = 50^2*6+50^2*7+50^2*8 = 52,500 (watts)