EARTHING

there are 4 concentric shells A,B,C,D, OFradii a,2a,3a,4a resp. shells B & D are given charges +q & -q resp. shell C is now earthed .the potential diff. VA-VC

34 Answers

1
skygirl ·

to my utter surprise!!

am not getting any change...

well this is the first time i calculated..

am gettnig kq/12a !!

1
metal ·

Maybe this is a stupid question, but still-------

How can the spheres B, C, D which are enclosing the sphere A, induce charge on A??? No electric field lines, due to the charges on the outer spheres will cut A, and so, I think charge induced on A will be zero, contrary to skygirl's initial assumption.

I might be wrong. I would request richa, skygirl, Nishant sir, or anyone else to explain.

1
skygirl ·

No electric field lines, due to the charges on the outer spheres will cut A

wat made you think so ?

62
Lokesh Verma ·

You are not wrong metal...

There will be no net charge on A.

Well i found only one mistake.. that is what I pointed out..

you found out another one :)

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