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The source of an electromagnetic wave can be a charge

The capacitance of a capacitor is $2 \ pF$. If the electric field inside the capacitor changes at a rate of $10^{12} \ V \ s^{-1}$,the displacement current is ..... $A$.

The voltage between the plates of a parallel plate capacitor of capacity $1 \ \mu F$ is changing at the rate of $4 \ V/s$. The displacement current in the capacitor is: (in $\mu A$)

Who obtained electromagnetic waves for the first time in the laboratory?

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) $\oint \vec{E} \cdot d\vec{l} = -\frac{d\phi_B}{dt}$

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