Basic Maths and Units and DimensionsHard
Question
A nonconducting solid sphere of radius R is charged so that potential on its surface is 40 V, then value of integral 
. Where r1 and r2 distances from centre (in SI units) :-
. Where r1 and r2 distances from centre (in SI units) :-Options
A.-30
B.30
C.-20
D.None
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