Question

The magnetic field between the circular plaates of radius 12 cm separated by distance of 4 mm 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. 15T
• D. 0.15 T

Answer 1

The correct option is A zero

We know that $B\alpha s$

$\because$ the point is on the axis$,$

$\therefore s=0$

Hence$,B=0$

$\therefore$ the required field will be $O.$

Hence,

option $\left(A\right)$ is correct answer.