Class 12PhysicsElectromagnetic wavesMaxwell's equations , Concept of displacement current and Hertz experiment
MediumWhat is the effect of displacement current?
(N/A) The displacement current allows the laws of electric and magnetic fields to be represented more symmetrically.
Faraday's law of electromagnetic induction states that a time-varying magnetic field produces an electric field.
Maxwell's modification to Ampere's law (the Ampere-Maxwell law) states that a time-varying electric field (represented by displacement current) produces a magnetic field.
Thus,electric and magnetic fields changing with time produce each other.
This symmetry in the laws of electromagnetism leads to the prediction of the existence of electromagnetic waves,which propagate through space as self-sustaining oscillations of electric and magnetic fields.
Faraday's law of electromagnetic induction states that a time-varying magnetic field produces an electric field.
Maxwell's modification to Ampere's law (the Ampere-Maxwell law) states that a time-varying electric field (represented by displacement current) produces a magnetic field.
Thus,electric and magnetic fields changing with time produce each other.
This symmetry in the laws of electromagnetism leads to the prediction of the existence of electromagnetic waves,which propagate through space as self-sustaining oscillations of electric and magnetic fields.
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Write the Ampere-Maxwell law in the form of an equation.
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View SolutionMatch List-$I$ with List-$II$ and choose the correct answer from the options given below:
| List-$I$ | List-$II$ |
| :--- | :--- |
| $A$. Gauss's law of magnetostatics | $I$. $\oint \vec{E} \cdot d\vec{a} = \frac{1}{\epsilon_0} \int \rho dV$ |
| $B$. Faraday's law of electromagnetic induction | $II$. $\oint \vec{B} \cdot d\vec{a} = 0$ |
| $C$. Ampere's law | $III$. $\oint \vec{E} \cdot d\vec{l} = -\frac{d}{dt} \int \vec{B} \cdot d\vec{a}$ |
| $D$. Gauss's law of electrostatics | $IV$. $\oint \vec{B} \cdot d\vec{l} = \mu_0 I$ |
| List-$I$ | List-$II$ |
| :--- | :--- |
| $A$. Gauss's law of magnetostatics | $I$. $\oint \vec{E} \cdot d\vec{a} = \frac{1}{\epsilon_0} \int \rho dV$ |
| $B$. Faraday's law of electromagnetic induction | $II$. $\oint \vec{B} \cdot d\vec{a} = 0$ |
| $C$. Ampere's law | $III$. $\oint \vec{E} \cdot d\vec{l} = -\frac{d}{dt} \int \vec{B} \cdot d\vec{a}$ |
| $D$. Gauss's law of electrostatics | $IV$. $\oint \vec{B} \cdot d\vec{l} = \mu_0 I$ |
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