Volts to Amps calculator lets you calculate the current in amperes from volts provided that either power in watts or resistance in ohms is known.
List of Contents
Volts to Amps Conversion Calculator
Volts to Amps Formula
From Watts
Formula: I = P/V
where
I = Current in amps
P = Power in watts
V = Voltage in volts
From Ohms
Formula: I = V/R
where
I = Current in amps
V = Voltage in volts
R = Resistance in Ohms
Solved Calculations and Examples
Example#1
Statement: Find the maximum current that can flow through a 10-watt resistor when a 120 Volts source is connected across it.
Solution: I = P/V = 10/120 = 0.083 Amps
Example#2
Example#2: Find the current passing through a 33 ohms resistor when a 12 V source is connected across it.
Solution: I = V/R = 12 V / 33 ohms = 0.36 Amps