The unit of power is joule per second (J/sec) also known as watts (W). Simply put, it is the amount of electrical energy transferred per unit time. Power (P) is a measure of the quantity of work a circuit can do, or a component can consume per unit time. This law states that the current passing through a conductor is directly proportional to its voltage, i.e., I=V/R Power Ohm’s law specifies the relationship between current, resistance, and voltage. It is a measure of an electrical component’s ability to resist the flow of electrical current.
Resistance (R) is the opposition to the flow of current. Current can only flow when there is a difference in electrical potential.
The current (I) is the amount of electric charge flowing through a point in a circuit at any given time.
Any difference in electrical potential causes electrons to flow from a point of higher potential to a point of lower potential. Voltage (V) is the electrical potential difference between two points in an electric circuit.