Two parallel plate air capacitors each of capacitance C were connected in series to a battery wi....

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Two parallel plate air capacitors each of capacitance
\( \mathrm{P} \)
C were connected in series to a battery with e.m.f. \( \varepsilon \). Then one of the capacitors was filled up with uniform dielectric with relative permittivity \( \mathrm{k} \). What amount of charge flows through the battery?
(1) \( \Delta q=\frac{1}{2} C E \frac{k+1}{k-1} \)
(2) \( \Delta q=\frac{1}{2} C E \frac{k-1}{k+1} \)
(3) \( \Delta q=\frac{1}{3} C E \frac{k-1}{k+1} \)
(4) None of these


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