Volts to Ohms Conversion Calculator with Formula and Solved Examples

Volts to Ohms conversion calculator is a useful calculation tool that lets you convert volts to ohms provided that either current in amps or power in watts is known.

List of Contents

Volts to Ohms Calculator

Volts to Ohms Formula

Volts to Ohms When Current is known

Formula: R = V/I

where

R = Resistance in ohms

V = Voltage in volts

I = Current in amps

Volts to Ohms When Power is known

Formula: R = V2/P

where

R = Resistance in ohms

V = Voltage in volts

P = Power in watts

Solved Example & Calculation on Volts to Ohms

Example#1: An unknown resistance has 0.5 Amps of current flowing through it when a 12 V source is connected across it. Find the resistance of.

Solution: R = V/I = 12 V / 0.5 A = 24 ohms

Example#2: Certain resistor dissipates 1 watt of power when a 9 V battery is connected across it. What is its resistance?

Solution: R = V2/P = (9)2/1 = 81 ohms

Summary

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