A $\backslash (0\mathrm{.}240-\backslash$mathrm$\{$A$\}\backslash )$ current is charging a capacitor that has circular plates $12\mathrm{.}9$ cm in radius. The plate separation is $4\mathrm{.}00$ mm $.$

$($a$)$ What is the time rate of increase of electric field between the plates?

$\backslash (\backslash$mathrm$\{$V$\}/(\backslash$mathrm$\{$m$\}\backslash$cdot $\backslash$mathrm$\{$s$\})\backslash )$

$($b$)$ What is the magnetic field between the plates $5\mathrm{.}00$ cm from the center?

What is the electric flux through a circle of radius $5\mathrm{.}00$ cm lying parallel to the plates, midway between them? T