A spherical shell of radius R is given charge 3q on its surface and a point charge q is placed at distance R//2 from its centre C. Also there is a charge 2q placed outside the shell at a distance of 2R as shown. Then

A spherical shell of radius R is given charge 3q on its surface and a

1.	A spherical shell of radius R is given charge 3q on its surface and a point charge q is placed at distance R//2 from its centre C. Also there is a charge 2q placed outside the shell at a distance of 2R as shown. Then
Answer» The magnitude of electric field at the centre `C` due to CHARGE on the outer SURFACE of shell is `(KQ)/(2R^(2))` before closing the switch `S` The electric potential at the centre `C` due to charges on the outer surface of shell is `((-Kq)/R)` before closing the switch `S` The electric potential at the centre `C` due to charges on the outer surface of shell is `((-Kq)/R)` after closing the switch `S`. Charge flown through the switch in to EARTH after closing the switch `S` is `5q` Solution :ACD

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A spherical shell of radius R is given charge 3q on its surface and a point charge q is placed at distance R//2 from its centre C. Also there is a charge 2q placed outside the shell at a distance of 2R as shown. Then

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