Select the formula for calculation
Current effective value
Voltage effective value
Inductive reactance
Capacitive resistance
![Alternating-current circuit](/formulae_view/i/h67_3.png)
Reactive resistance on series connection of L and C
![Alternating-current circuit](/formulae_view/i/h67_4.png)
Reactive resistance on parallel connection of L and C
![Alternating-current circuit](/formulae_view/i/h67_5.png)
Impedance on series connection of R and X
![Alternating-current circuit](/formulae_view/i/h67_6.png)
Total voltage on series connection of R and X
![Alternating-current circuit](/formulae_view/i/h67_7.png)
Complex admittance on parallel connection of R and X
![Alternating-current circuit](/formulae_view/i/h67_8.png)
Total current on parallel connection of R and X
![Alternating-current circuit](/formulae_view/i/h67_9.png)
Phase shift on series connection of R, L and C
Phase shift on parallel connection of R, L and C
Loss angle
Resonance. Thomson's formula
Active power
Reactive power
Total power
Transformer
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