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Two circular coils P and Q are made from...

Two circular coils `P` and `Q` are made from similar wire but radius of `Q` is twice that of `P`. Relation between the values of potential difference across them so that the magnetic induction at their centers may be the same is

A

`V_(q)=2V_(p)`

B

`V_(q)=3V_(p)`

C

`V_(q)=4V_(p)`

D

`V_(q)=1//4V_(p)`

Text Solution

Verified by Experts

The correct Answer is:
3
`B=(mu_(0)i)/(2r)` where `i=(V)/(R)`
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