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A parallel plate condenser is made up of...

A parallel plate condenser is made up of 26 metal strips each 3 cm by 4 cm separated by sheets of mica of dielectric constant 6 and uniform thickness of 0.2mm. Calculate its capacity.

Text Solution

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`A = 0.03xx0.04=12xx10^-4m^2`
`n=(26-1) = 25`
`epsilon_r=6`
`epsilon_0=8.854xx10^-12C^2N^-1m^-2`
`d=0.2mm=2xx10^-4m`
`C=(epsilon_0epsilon_rA)/d`
`=(25xx8.854xx10^-12xx6xx12xx10^-4)/(2xx10^-4)`
`=7.965xx10^-9F`
Capacity `=7.965xx10^-9F`
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