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A solid conducting sphere having a charge Q is surrounded by an uncharged concentric conducting hollow spherical shell. Let the potential difference between the surface of the solid sphere and that of the outer surface of the hollow shell be V. If the shell is now given a charge of -3Q, the new potential difference between the same two surfaces is : (a) V (b) 2 V (c) 4 V (d) – 2V

A solid conducting sphere having a charge Q is surrounded by an uncharged concentric conducting hollow spherical shell. Let the potential difference between the surface of the solid sphere and that of the outer surface of the hollow shell be V. If the shell is now given a charge of -3Q, the new potential difference between the same two surfaces is :
 
(a) V
(b) 2 V
(c) 4 V
(d) – 2V

Grade:6

1 Answers

bharat bajaj IIT Delhi
askIITians Faculty 122 Points
7 years ago
a) Because the potential difference between solid sphere and hollow shell depends on the radii of two spheres and charge on the inner sphere.Since the two values have not changed, therefore, potential difference does not change. Answer is a)
Thanks
Bharat Bajaj
IIT Delhi
askiitians faculty

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