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

Assertion : Dipole oscillations produce electromagnetic waves.
Reason : Accelerated charge produces electromagnetic waves.

Who discovered for the first time that a changing electric field can produce a magnetic field?

$A$ parallel plate capacitor is charged to $60\,\mu C$. Due to a radioactive source,the plate loses charge at the rate of $1.8 \times 10^{-8}\, C/s$. The magnitude of the displacement current is:

According to Maxwell's hypothesis,a changing electric field gives rise to

$A$ capacitor of capacitance $C$ is connected across an $AC$ source of voltage $V$,given by $V = V_{0} \sin \omega t$. The displacement current between the plates of the capacitor would then be given by: