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A condenser is charged using a constant ...

A condenser is charged using a constant current. The ratio of the magnetic field at a distance of `(R )/(2)` and `R` from the axis of condenser (`R` is the radius of plate) while charging is

A

`1:1`

B

`2:1`

C

`1:2`

D

`1:4`

Text Solution

Verified by Experts

The correct Answer is:
C
`r lt RB=(mu_(0)I_(0)r)/(2piR^(2))`, `r=R B=(mu_(0)I_(d))/(2piR )`
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