Ohm’s Law, a fundamental principle in electronics, states that the flow of electric current between two points in a conductor is directly proportional to the voltage applied. This relationship holds true for a wide range of materials, voltages, and currents, ensuring that the resistance and conductance of electronic components remain consistent. Ohm’s Law remains valid in circuits containing only resistive elements, whether the current is constant (DC) or fluctuating (AC). It is represented by various equations, often presented together, such as:

• V = I × R
• R = V / I
• I = V / R

In the realm of electrical power, power refers to the rate at which electrical energy is transferred within an electric circuit over a specific time period, measured in Watts according to the SI unit. Electric generators predominantly generate power, which is then distributed to households and businesses via the electric power industry. Additionally, power can be supplied by sources like electric batteries. In resistive circuits, Joule’s Law can be integrated with Ohm’s Law to formulate alternative expressions for the dissipation of power:

• P = V × I
• P = V² / R
• P = I² × R

Ohm’s Law Calculator allows you to compute voltage, current, resistance, and power effortlessly. Simply input two known values and tap the Calculate button to instantly obtain the remaining information.