What is Displacement

[walters]

So how does a Capacitor get its phase shift ?

From the charging and dischanging is that the phase shift?

 

[ljcox]

A capacitor has a 90 degree phase shift between the current and voltage.

This is because the voltage (V) across the cap is proportional to the charge (Q) stored in the Cap. Q = CV

Current is the rate of flow of charge, I = dQ/dt where t = time.

So when a cap is charging, charge is flowing into it. This takes time so the voltage rises gradually.

Therefore the voltage lags the current.

Len

 

[niga]

the phase difference is the difference between the current and voltage.in the case of a capacitor its current leads voltage by 90 deg.

 

[ljcox]

Yes