Enter 2 *values* to get the other values and press the *Calculate* button:

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

Example

20V

The power P in watts (W) is equal to the voltage V in volts (V) times the current I in amps (A):

*P* = *V* × *I*

Example

*P* = 20V × 2A = 40W

Enter 2 values of magnitude+phase angle to get the other values and press the *Calculate* button:

The voltage V in volts (V) is equal to the current I in amps (A) times the impedance Z in ohms (Ω):

*V*_{(V)} = *I*_{(A)} × *Z*_{(Ω)} =
(|*I*|×|*Z*|) ∠ (*θ _{I}* +

The complex power S in volt-amps (VA):

*S*_{(VA)} = (|*V*|×|*I*|) ∠ (*θ _{V}* -