Inductive field

Q.  Which term is regarded as an inductive field as it is predictable from Biot Savart law & considered to be of prime importance at near field or the distance close to current element?
- Published on 01 Oct 15

a. 1/ r
b. 1/ r2
c. 1/ r3
d. 1/ r4

ANSWER: 1/ r2

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