Ques. 1JEE Main 2025, 23 January (Evening Shift)
A time varying potential difference is applied between the plates of a parallel plate capacitor of capacitance 2.5 . The dielectric constant of the medium between the capacitor plates is 1 . It produces an instantaneous displacement current of 0.25 mA in the intervening space between the capacitor plates, the magnitude of the rate of change of the potential difference will be V s-1.
Answer
100
Solution
The displacement current in the gap equals the conduction current that charges the plates.
[figure]
Id= dqdt=C dVdt dVdt= 0.25 10-32.5 10-6=100 V s-1
Answer: 100