Class 12PhysicsElectromagnetic wavesMaxwell's equations , Concept of displacement current and Hertz experiment
Easy$A$ time-varying potential difference is applied between the plates of a parallel plate capacitor of capacitance $2.5 \mu \text{F}$. The dielectric constant of the medium between the capacitor plates is $1$. It produces an instantaneous displacement current of $0.25 \text{ mA}$ in the intervening space between the capacitor plates. The magnitude of the rate of change of the potential difference will be . . . . . . $\text{V s}^{-1}$.
- A$360$
- B$200$
- C$219$
- D$100$
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Match the following Maxwell’s equations: (The symbols used here have their usual meanings) List-$I$ List-$II$ $(a)$ Gauss’ law for electrostatics $(i)$ $\oint \vec{E} \cdot d\vec{A} = \frac{Q}{\epsilon_0}$ $(b)$ Gauss’ law for magnetism (ii) $\oint \vec{B} \cdot d\vec{l} = \mu_0 [i_c + \epsilon_0 \frac{d\phi_E}{dt}]$ $(c)$ Faraday’s law (iii) $\oint \vec{B} \cdot d\vec{A} = 0$ $(d)$ Ampere-Maxwell’s law (iv) $\oint \vec{E} \cdot d\vec{l} = -\frac{d\phi_B}{dt}$
| List-$I$ | List-$II$ |
| $(a)$ Gauss’ law for electrostatics | $(i)$ $\oint \vec{E} \cdot d\vec{A} = \frac{Q}{\epsilon_0}$ |
| $(b)$ Gauss’ law for magnetism | (ii) $\oint \vec{B} \cdot d\vec{l} = \mu_0 [i_c + \epsilon_0 \frac{d\phi_E}{dt}]$ |
| $(c)$ Faraday’s law | (iii) $\oint \vec{B} \cdot d\vec{A} = 0$ |
| $(d)$ Ampere-Maxwell’s law | (iv) $\oint \vec{E} \cdot d\vec{l} = -\frac{d\phi_B}{dt}$ |
MediumKCET 2026
View SolutionWhich of the following Maxwell's equations is valid for time-varying conditions but not valid for static conditions?
In the charging of a capacitor,what is the contradiction in Ampere's circuital law?
Difficult
View SolutionAccording to Maxwell,which is the missing term in Maxwell-Ampere circuital law?
Medium
View Solution$A$ circular parallel plate capacitor of radius $R$ and spacing $d$ is being charged by a constant current $I_D$. Find the magnetic field between the plates at a distance $r$ from the axis,where $r > R$.
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