How to convert Volts to Amps

Volts to Amps calculation formula with watts

I(A) = P(W) / V(V)

The current I in amps (A) is equal to the power P in watts (W), divided by the voltage V in volts (V).

So,

A = W / V
amp = watt / volt

For example:

Power (P) = 330W
Voltage (V) = 110V

Current (I) = 330W / 110V = 3A

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Volts to Amps calculation formula with ohms

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 / R
amp = volt / ohm

For example:

Voltage (V) = 45V
Resistance (R) = 15Ω

Current (I) = 45V / 15Ω = 3A

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