# How To Calculate Total Power In A Parallel Circuit

In this article, we will discuss how to calculate the total power in a parallel circuit. We will start with a basic overview of parallel circuits, then we will discuss the formula for calculating total power, and finally, we will provide some examples of how to apply the formula.

## What is a Parallel Circuit? A parallel circuit is a circuit in which two or more components are connected in parallel. This means that the current can flow through each component independently of the others. In a parallel circuit, the total current is the sum of the currents through each individual component.

## Formula for Calculating Total Power The formula for calculating total power in a parallel circuit is: ``` P = V * I ``` where: *

### P

is the total power in watts *

### V

is the voltage in volts *

### I

is the total current in amps

## Examples Let's look at some examples of how to apply the formula for calculating total power in a parallel circuit.

### Example 1:

A parallel circuit has two resistors, R1 and R2, connected in parallel. The voltage across the circuit is 12 volts, and the current through R1 is 2 amps. What is the total power in the circuit? To solve this problem, we first need to find the total current in the circuit. We can do this by using the formula: ``` I = V / R ``` In this case, we have: ``` I = 12 V / 2 Ω = 6 A ``` Now that we know the total current, we can find the total power by multiplying the voltage by the current: ``` P = V * I = 12 V * 6 A = 72 W ``` So, the total power in the circuit is 72 watts.

### Example 2:

A parallel circuit has three resistors, R1, R2, and R3, connected in parallel. The voltage across the circuit is 12 volts, and the current through R1 is 2 amps. What is the total power in the circuit? To solve this problem, we first need to find the total resistance of the circuit. We can do this by using the formula: ``` 1 / R = 1 / R1 + 1 / R2 + 1 / R3 ``` In this case, we have: ``` 1 / R = 1 / 2 Ω + 1 / 4 Ω + 1 / 6 Ω = 1 / 1 Ω ``` Now that we know the total resistance, we can find the total current by using the formula: ``` I = V / R = 12 V / 1 Ω = 12 A ``` Now that we know the total current, we can find the total power by multiplying the voltage by the current: ``` P = V * I = 12 V * 12 A = 144 W ``` So, the total power in the circuit is 144 watts.

## Conclusion In this article, we have discussed how to calculate the total power in a parallel circuit. We started with a basic overview of parallel circuits, then we discussed the formula for calculating total power, and finally, we provided some examples of how to apply the formula.

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