Displacement Current

IMPORTANT

Displacement Current: Overview

This topic covers concepts such as Ampere Circuital Law and Its Contradiction, Electric Current, Conventional Current, Displacement Current, Consequences of Displacement Current and Ampere-Maxwell Law.

Important Questions on Displacement Current

EASY
IMPORTANT

An electric field changing with time gives rise to a magnetic field, is a consequence of the _____ being a source of magnetic field.

MEDIUM
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List the consequences of the displacement current.

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Displacement current is continuous:

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Ampere's circuital law is given by:

EASY
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Define ampere circuital law.

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What is conventional electric current?

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The charge of a parallel plate capacitor is varying as q=q0sin(2πft). The plates are very large and close together (area=A, separation=d). Neglecting the edge effects, the displacement current through the capacitor is

EASY
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Instantaneous displacement current of 1.0 A in the space between the parallel plate of 1 μF capacitor can be established by changing potential difference at a rate of

HARD
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A capacitor is having a capacity of 2pF. Electric potential across the capacitor is changing with a rate of 1012 V/s. The displacement current is:

EASY
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A magnetic field can be produced by

EASY
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Calculate the displacement current through a symmetrically drawn area A4 between the plates of a parallel plate capacitor of area A and plate separation d. It is given that the capacitor is charged by a constant current i.

EASY
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Find the displacement current through the plates of a parallel plate capacitor if it is known that the charge on the plates vary as q=q0sin2πnt. Assume that the plates are very large and close together and neglect the edge effects.

EASY
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In order to establish an instantaneous displacement current of 1 mA in the space between the plates of 2 μF parallel plate capacitor, the rate of change of potential difference is

EASY
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Displacement current goes through the gap between the plates of a capacitor when the charge on the capacitor

EASY
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The displacement current is

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Displacement current is

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The magnetic field between the plates of a capacitor when r > R is given by

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In electromagnetic wave, according to Maxwell, changing electric field gives

MEDIUM
IMPORTANT

A capacitor has a capacity of 2 pF. The electric field across the capacitor is changing with a value of 1012 V s-1. The displacement current is

EASY
IMPORTANT

A parallel plate capacitor is charged to 60 μC. Due to a radioactive source, the plate loses charge at the rate of 1.8×10-8 C s-1. The magnitude of displacement current is