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Question

The electrostatic potential (ϕr) of a spherical symmetric system, kept at origin, is shown in the adjacent figure, and given as
ϕr=q4πor(rR0)

ϕr=q4πoR(rR0)R0r
Which ofthe following option(s) is/are correct?

42752.jpg

A
For spherical region rR0, total electrostatic energy stored is zero.
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B
Within r=2R0, total charge is q.
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C
There will be no charge anywhere except at r=R0.
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D
Electric field is discontinuous at r=R0.
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Solution

The correct options are
A For spherical region rR0, total electrostatic energy stored is zero.
B Within r=2R0, total charge is q.
C There will be no charge anywhere except at r=R0.
D Electric field is discontinuous at r=R0.
1868445_42752_ans_e8a49d333aff4d2cbdd64ed6a4c2d530.jpg

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