A parallel plate capacitor of area 60cm^2 and separation 3mm is charged initially at 90 micro coulomb. If the medium between the plates get slightly conducting and the plate loses charge initially at the rate of 2.5 *10^-8 C per sec then what is the magnetic field between the plates?
closed as off-topic by Danu, CuriousOne, John Rennie, ACuriousMind♦, Kyle Kanos Mar 19 '16 at 11:07
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The produced magnetic field will be circular in nature. You should use Ampere's Law (with Maxwell's addition) where the produced magnetic field would be due to two sources: Direct current due to free charges and Displacement Current due to a time-varying electric field.
Since this is homework problem, it is not appropriate to give you the solution in all its steps. I hope this will give you a good hint.