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Byju's Answer
Standard XII
Physics
Gauss's Law
Gauss's law i...
Question
Gauss's law is true only if force due to a charge varies as
A
r
−
1
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B
r
−
2
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C
r
−
3
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D
r
−
4
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Solution
The correct option is
A
r
−
2
Gauss's law is true only if force due to a charge varies as :-
ϕ
=
q
ϵ
0
ϕ
=
E
A
or,
ϕ
=
1
4
π
ϵ
0
q
r
2
A
or,
F
A
=
1
4
π
ϵ
0
q
r
2
A
or,
F
α
r
−
2
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0
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