Power is the rate at which energy is transferred.The units are watts (1 watt = 1joule per second).In an electrical circuit the energy is dissipated by a component.Electrical energy is transformed to other forms of energy when electric charges move through an electric potential difference. This happens when electric current flows through electrical components in electric circuits.
In a resistive circuit, all power is dissipated by the resistors as heat due to the resistance of the circuit.In a pure resistance circuit, power is equal to VI or I2R or V2/R.
In a resistive circuit, all power is dissipated by the resistors as heat due to the resistance of the circuit.In a pure resistance circuit, power is equal to VI or I2R or V2/R.