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What is the capacitance of arrangement o...

What is the capacitance of arrangement of `4` platges each of area `A` at a distance `d` in air in Fig.

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The correct Answer is:
`3 in_(0) A//d`
Suppose the pair of plates `A` is connected to positive terminal of the battery and the pair of plates `B` is connected to negative terminal of the battery, Fig, As is clear from the figure, we have three capacitors `I ,II` and `III`. Positive plates are connected to each othe rand so are the negative plates. Therefore, these are joined in parallel.
`C_(p) = C_(1) + C_(2) + C_(3) = 3 C = 3 in_(0) A//d`
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PRADEEP-ELECTROSTATICS-Exercise
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