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tpspoons
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Homework Statement
Use Gauss' law to find an expression for the electric field within a charged parallel plate capacitor with two layers of dielectric materials (?r1 and ?r2).
(See attached image, this is for question 2a).
The Attempt at a Solution
My approach would be to split the capacitor into two capacitors, each with r1 and r2 dielectrics - connected in series. Then the electric field across them both would be the sum of the electric fields across each one?
So:
For The first dielectric:
The integral of: E1.dA = Q/(e0*er1)
E1 = Q/(e0*er1*A)
E2 = Q/(e0*er2*A)
Therefore
Etotal = (Q/(?0*A)) * (1/?r1 + 1/?r2)
Am I taking the right approach?
Any help would be appreciated,
Thanks.