What is the formula for calculating power in an electric circuit?

The formula for calculating power in an electric circuit is based on the relationship between voltage, current, and resistance. Power (P) is defined as the rate at which electrical energy is consumed or converted into another form of energy, such as heat or light.

The correct expression, Power (P) = Voltage (V) × Current (I), signifies that the power in a circuit is directly proportional to both the voltage applied across the circuit and the current flowing through it. This relationship is derived from Ohm's Law, which connects voltage (V), current (I), and resistance (R) through the equation V = I × R. By rearranging and incorporating these equations, the power can be expressed as P = V × I.

Using this formula, if you have either a higher voltage or a higher current in a circuit, the power also increases, highlighting how these two quantities are essential in determining the overall energy consumption of electrical devices.