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A parallel plate capacitor has plate area A and separation between the plates equal to d. A material of dielectric constant K and resistivity rho is filled between the plates. The switch is closed to connect the capac- itor to a cell of emf V. (a) Write the steady state current in the circuit and charge on the capacitor. (b) When the circuit is in steady state, switch s is opened (at t = 0). Write charge on the capacitor as function of time (t) after this |
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Answer» (b) `q=(K in_(0)AV)/(d)E^(-(t)/(K rhoin_(0)))` |
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