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chmate
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Homework Statement
Dielectric medium inside capacitor consists of two types (check the pic). Capacitor's plates are connected to a source of constant tension U. Distance between the plates is d and their area is S. Find the electric charge of capacitor's plates.
Data given: U=500 V, d=2cm, S=80cm^2, εr1=2.5, εr2=1.0.
(ε1=εr1*ε0 ^ ε2 = εr2*ε0)
The Attempt at a Solution
By applying Gauss's Law for a surface around the capacitor's plate, I manage to get the electric field intensity which is [itex]E=\frac{Q}{ε0εr1S1+ε0εr2S2}[/itex]
[itex]U=\frac{Qd}{ε0εr1S1+ε0εr2S2}=500[/itex]
which implies
[itex]Q=\frac{500(ε0εr1S1+ε0εr2S2)}{d}[/itex]
I don't know how to continue after this because I don't know S1 and S2 separately.
Help me!