How do you calculate electrical power in a circuit?

To calculate electrical power in a circuit, multiply the voltage by the current.

Electrical power is the rate at which electrical energy is transferred or converted into other forms of energy. It is measured in watts (W) and is calculated by multiplying the voltage (V) by the current (I) in a circuit. The formula for electrical power is P = VI.

Voltage is the potential difference between two points in a circuit, and it is measured in volts (V). Current is the flow of electric charge through a circuit and is measured in amperes (A). To calculate the power in a circuit, you need to know the voltage and current values.

For example, if a circuit has a voltage of 12V and a current of 2A, the power can be calculated by multiplying 12V by 2A, which gives a result of 24W. This means that the circuit is transferring or converting 24 joules of electrical energy per second.

It is important to note that electrical power can be positive or negative, depending on the direction of the current flow and the polarity of the voltage. In a circuit with a battery, for example, the power will be positive when the current flows from the positive terminal to the negative terminal, and negative when the current flows in the opposite direction.