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A charge Q is disturbed over three concentric spherical shells of radii a, b, c (a  such that their surface charge densities are equal to one another. The total potential at a point at distance r from their common centre, where r a, would be :

(a)

 

(b)

 

(c)

 

(d)

 


Question ID - 50229 | Top Ranker Answer | SaraNextGen

A charge Q is disturbed over three concentric spherical shells of radii a, b, c (a  such that their surface charge densities are equal to one another. The total potential at a point at distance r from their common centre, where r a, would be :

(a)

 

(b)

 

(c)

 

(d)

 

1 Answer - 5876 Votes

3537

Answer Key : (b) -

Potential at point P, V= + +

 

   

Q

    = Q

    = Q

     V=

Correct answer is (b).



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