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Two concentric hollow conducting spheres of radius r and R. The charge on outer shell is Q. What charge should be given to inner spgere so thag potential at any point P outside the outer sphere is zero

Two concentric hollow conducting spheres of radius r and R. The charge on outer shell is Q. What charge should be given to inner spgere so thag potential at any point P outside the outer sphere is zero     

Grade:12

2 Answers

Arun
25763 Points
one year ago
i think the answer is -Q as the sum of potential must be zero outside the outer sphere
 
Hope it helps
 
Regards
Arun (askIITians forum expert)
Khimraj
3007 Points
one year ago
V = KQ/R + Kq/r
V = 0
so Q + q = 0
the q = -Q
Hope it clears.....................................................................................

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