Question

The magnetic field between the circulate plates of radius `12cm` separted by distance of `4mm` of a parallel plate capacitor of capacitance `100 pF`. Along the axis of plates having conduction current of `0.15 A` is
A. zero
B. `1.5 T`
C. `15 T`
D. `0.15 T`

Answer 1

Correct Answer - A
`B=(mu_(0)I_(d)r)/(2piR^(2))`, `r=0`