ElectrostaticsHard
Question
A hollow uniformly charged sphere has radius r. If the potential difference between its surface and a point at distance 3r from the centre is V, then the electric field intensity at a distance 3r from the centre is:
Options
A.V/6r
B.V/4r
C.V/3r
D.V/2r
Solution
∵ V = 
V = 
∴ Field intensity at distance 3r from centre =
= 
V = ∴ Field intensity at distance 3r from centre =
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