If radius of a hollow metallic sphere is 'R'. If the P.D between it's surface and a point at a distance 3R from it's centre is V then the electric field intensity at a distance 2R from it's centre is
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If radius of a hollow metallic sphere is 'R'. If the P.D between it's surface and a point at a distance 3R from it's centre is V then the electric field intensity at a distance 2R from it's centre is