Electrostatics Question 817

Question: For the configuration of media permittivities $ {\varepsilon _{0}},\varepsilon $ and $ {\varepsilon _{0}} $ between parallel plated each of area A, as shown in Fig. the equivalent capacitance

Options:

A) $ {\varepsilon _{0}}A/d $

B) $ \varepsilon {\varepsilon _{0}}A/d $

C) $ \frac{\varepsilon {\varepsilon _{0}}A}{d( \varepsilon +{\varepsilon _{0}} )} $

D) $ \frac{\varepsilon {\varepsilon _{0}}A}{( 2\varepsilon +{\varepsilon _{0}} )d} $

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Answer:

Correct Answer: D

Solution:

[d] $ C _{eq}=\frac{{\varepsilon _{0}}}{\frac{d}{K _{1}}+\frac{d}{K _{2}}+\frac{d}{K _{3}}} $ Here, $ K _{1}=K _{3}=1,K _{2}=\varepsilon /{\varepsilon _{0}} $



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