Ohms law calculator

This calculator helps you to compute Voltage, Current, Resistance, Power and wattage rating of a resistor in an electronic circuit.This calculator needs a minimum of two inputs to calculate the results.All the fields except Power can be used as input.

**Voltage, Current, Resistance : Input/Output, Power: Output.






You can also determine the necessary wattage rating of a resistor to use in a circuit using this calculator.As a rule of thumb use resistor which has wattage rating twice the actual power dissipation in it.

FORMULAS:

This calculator uses variations of Ohms law to calculate results

To determine voltage

V = IR

To determine Current

I = V / R

To determine resistance

R = V / I

To calculate power

P = VI

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