
Check Your Understanding When the emf across a capacitor Is turned on and the capacitor Is allowed to charge, when does the magnetic field Induced by the displacement current have the greatest magnitude?

To Explain:
The time when magnetic field induced by the displacement current has the greatest magnitude.
Explanation of Solution
Introduction:
Capacitor is allowed to charge when EMF is turned on across the capacitor. It is greatest immediately after EMFis turned on. Electric field changes at the plates then displacement current and magnetic field are proportional to rate of change.
The displacement current and the magnetic field across the capacitor are proportional to the rate of change of electric field between the plates. When EMF is turned on across the capacitor, Electric field changes at the plates, by which the displacement current is induced. By this displacement, current magnetic field is generated which has greatest value when the plates begin to charge.
Conclusion:
There is a dielectric medium between the plates of capacitor, so it has to be maintained when EMF is turned on to the capacitor. It is allowed to charge. By charging on, magnetic field is generated due to displacement current and have highest magnitude.
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