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The magnetic field between the plates of...

The magnetic field between the plates of a capacitor when `r gt R` is given by-

A

`(mu _(0) I _(D) r)/(2pi R ^(2))`

B

`(mu_(0) I _(D))/(2pi R)`

C

`(mu _(0) I _(D))/(2pi r )`

D

zero

Text Solution

Verified by Experts

The correct Answer is:
C
Using Amper.s circuital law,
`oint vecB.dvecl=mu_(0) I D`
`or B 2pi r = mu_(0) I _(D) or B = mu _(0) I _(D) // 2pi r `
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