## 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*

## Ohms to Amps calculation formula with watts

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).

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So,

*A = √ (W / Ω)*

*amp = √ (watt / ohm)*

**For example:**

*Power (P) = 40W*

*Resistance (R) = 80Ω*

*Current (I) = √ (40W / 80Ω) = 0.7071A*

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