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Three concentric spherical metal shells ...

Three concentric spherical metal shells A.B.C of radii a,b,c`(c gt b gt a)` have surface charge density `+sigma, - sigma and +sigma` respectively. The potential of the middle shell is `(sigma)/(epsilon_(0))` times

A

`((a^2)/( b )-b +c)`

B

`(a-b+c)`

C

`((a^2 -b^2+c^2)/(C ))`

D

`(a-b +(c^2)/(B))`

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AAKASH SERIES-APPENDICES ( REVISION EXERCISE )-REVISION EXERCISE (ELECTRIC POTENTIAL & CAPACITANCE )
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  18. At a distance of 1 m from a fixed charge of 1 mC, a particle of mass 2...

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