Ohm's Law Calculator
English

Ohm's law states that the current through a conductor between two points is directly proportional to the potential difference across the two points, and inversely proportional to the resistance between them.

The below Ohm's Law calculator helps you find the Power with the given other two values. Calculate Power with Voltage and Current as per Ohm's Law of P = EI, with Current and Resistance as per the law P = I2R, with Voltage and Resistance as per the law P = (E2 / R).

Calculate Power using Ohm's Law

Calculate Power with Voltage and Current:
V
A
W
Calculate Power with Current and Resistance:
A
ohm
W
Calculate Power with Voltage and Resistance:
V
ohm
W

Ohm's law states that the current through a conductor between two points is directly proportional to the potential difference across the two points, and inversely proportional to the resistance between them.

The below Ohm's Law calculator helps you find the Power with the given other two values. Calculate Power with Voltage and Current as per Ohm's Law of P = EI, with Current and Resistance as per the law P = I2R, with Voltage and Resistance as per the law P = (E2 / R).

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Formula :

The general formula for Power is:

P= ExI P= I2xR P= E2/R

Example:

Using Ohm's law,

Step 1

The power with voltage 5 Volt and 8 Amp current is
= 5 x 8
= 40 Watts

Step 2

Power with 8 Amps of current and 3 ohms of resistance is
= 82 x 3
= 192 Watts

Step 3

Power with Voltage 5 Volts and 3 ohms of resistance is
= (52)/ 3
= 8.333 Watts

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