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The magnetic field between the plate of a capacitor where r > R is given by (where r is the distance from the axis of plates and R is the radius of each plate of capacitor) |
$\frac{\mu_0 i_D r}{2\pi R^2}$ $\frac{\mu_0 i_D }{2\pi R}$ $\frac{\mu_0 i_D }{2\pi r}$ Zero |
$\frac{\mu_0 i_D }{2\pi r}$ |
Using Ampere circuit law, $\oint \vec{B}.\vec{dl} = \mu_0i_D$ $ or\, B.2\pi r = \mu_0 i_D$ $ or \, B = \frac{\mu_0 i_D }{2\pi r}$ |
