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![[Post New]](/templates/default/images/icon_minipost_new.gif) 31 May 2008 19:51:28 IST
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A solid conducting sphere of charge Q is surrounded by an uncharged concentric spherical shell. The potential difference between the sphere and the shell is V. If the shell is now given a charge of -3Q, the new potential difference between will be –find it please.
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31 May 2008 23:05:27 IST
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It will remain same as giving charge to shell will not change field between the sphere and shell. as electric field remains same so potential difference will also remain same,
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Krishna Gopal Singh
B.Tech Chemical Engg
IIT Delhi 2002
Currently doing PhD from IIT Delhi |
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1 Jun 2008 14:00:39 IST
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It will remain V
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1 Jun 2008 14:37:16 IST
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the difference iof potential between the solid sphere & the hollow spherical shell depends only on there radii & the charge on the inner solid sphere.
V is propertional to Q/R1)+ (Q/R2)
when charge -Q is placed on outer sphere , the potential of inner sphere is (Q/R1)+(-3Q/R2)
that of outer sphere is (-Q/R2)+(- 3Q/R2)
THE DIFFERENCE IS AGAIN (Q/R1)+ (Q/R2)
so the ans: V
CHEERS...... :)
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