Electric current in amps (A) to apparent power in volt-amps (VA).

You can calculate volt-amps from amps and volts, but you can't convert amps to volt-amps since volt-amps and amps units do not measure the same quantity.

The apparent power *S* in volt-amps (VA) is equal to current
*I*
in amps (A), times the RMS voltage *V* in volts (V):

*S*_{(VA)} = * I*_{(A)}* *×* V*_{(V)}

So volt-amps are equal to amps times volts:

volt-amps = amps × volts

or

VA = A ⋅ V

What is the apparent power in VA when the current is 12A and the voltage supply is 110V?

Solution:

*S* = 12A × 110V = 1320VA

The apparent power *S* in volt-amps (VA) is equal to square
root of 3 times current *I*
in amps (A), times the line to line RMS voltage *V*_{L-L} in volts
(V):

*S*_{(VA)} = *√*3
× * I*_{(A)}* *×* V*_{L-L(V)}

So volt-amps are equal to square root of 3 times amps times volts:

kilovolt-amps = *√*3
× amps × volts

or

kVA = *√*3
× A ⋅ V

What is the apparent power in VA when the current is 12A and the voltage supply is 110V?

Solution:

*S* = *√*3
× 12A × 110V = 2286VA

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