Question

Electric field between thé two plates capacitor is given find thé magnitude of displacement current

Answer 1

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Electric field between thé two plates capacitor is given find thé magnitude of displacement current

What is a displacement current in a capacitor?

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7 ANSWERS



Supratim Biswas, Testing Department

Answered Feb 9, 2018 · Author has 968answers and 454.1k answer views

Thanks for A2A..

The calculation of the magnetic field of a current distribution can, in principle, be carried out using Ampere's law which relates the path integral of the magnetic field around a closed path to the current intercepted by an arbitrary surface that spans this path:



Ampere's law is independent of the shape of the surface chosen as long as the current flows along a continuous, unbroken circuit. However, consider the case in which the current wire is broken and connected to a parallel-plate capacitor . A current will flow through the wire during the charging process of the capacitor. This current will generate a magnetic field and if we are far away from the capacitor, this field should be very similar to the magnetic field produced by an infinitely long, continuous, wire. However, the current intercepted by an arbitrary surface now depends on the surface chosen. For example, the surface shown in the given figure does not intercept any current. Clearly, Ampere's law can not be applied in this case to find the magnetic field generated by the current.



Answer 2

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Explanation: