How to convert Ohms to Amps

Ohms to Amps calculation formula with volts

I_(A) = V_(V) / R_(Ω)

The current I in amps (A) is equal to the voltage V in volts (V), divided by the resistance R in ohms (Ω).

So,

A = V / Ω
amp = volt / ohm

For example:

Voltage (V) = 15V
Resistance (R) = 20Ω

Current (I) = 15V / 20Ω = 0,75A

I_(A) = √ (P_(W) / R_(Ω))

The current I in amps (A) is equal to the square root of the power P in watts (W), divided by the resistance R in ohms (Ω).

So,

A = √ (W / Ω)
amp = √ (watt / ohm)

For example:

Power (P) = 40W
Resistance (R) = 80Ω

Current (I) = √ (40W / 80Ω) = 0.7071A