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Two insulated charged copper spheres A and B of identical size have charges qA and qB respectively.When they are brought in contact with each other and finally separated, what are the new charges on them?
What does the word INSULATED imply here?
What if it were conducting?
Dear student,
There will be distribution of charges...
Let a charge q be uniformly distributed along a length l, then the linear
SI unit of linear charge is C/m.
Suppose a charge q is uniformly distributed over a surface of area A.
Then the surface density s defined as the charge per unit area.
To answer your initial question, nothing will happen. "Insulated" implies they are non conducting. So charges are not free to move on them and hence there shall NOT be a distribution of charges. If they were conducting, charges would flow between them until they acquire the same potential. Thus finally they would each have a charge of (Qa + Qb)/2
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