(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A paralel plate capacitor is used as a vibration sensor. The plates have an area of 100cm^2, the dieelectric is air, and the dist between the plates is given by

d(t)=1+.01 sin(200 t) mm

A constant voltage of 200 V is applied to the sensor. Determine the current through tthe sensor as a function of time by using the aproximation1/(1+x) = 1-x for x<<1.

2. Relevant equations

C=(1*10000mm^2)/(d(t)

i(t)= C* dv/dt

3. The attempt at a solution

this is about as far as i have gotten because im not sure how to approach this exaclty because Im not sure what the dv/dt is since i know it has a constant voltage across it there is 200 v across the capacitor but that leaves me with dv/dt =0.

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# Homework Help: Current through parallel plate capacitor vibration sensor

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