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How to derive voltage from charges on a capacitor?

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Hi,
I built a capacitor with electromechanics (emi) physics.
Firstly a DC bias voltage is applied on the top and bottom electrodes with stationary study. Then by applying pressures on the top plate with harmonic perturbation study (Frequency-domain, perturbation) , the charges on the top electrode can be obtained in different frequencies. The capacitance can also be calculated from the emi.Q0_1/emi.V0_1. (emi.V0_1 = DC voltage value)
What I want is to derive electric voltage from the charges on the capacitor. What physics should be applied to the model. Electrical Circuit, Electric Current or Electrostatics?
Thanks!

0 Replies Last Post 2015年8月18日 GMT-4 08:00
COMSOL Moderator

Hello Yuanyu Yu

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