The existence of electromagnetic waves was experimentally confirmed by

"Changing electric field produces magnetic field". Explain the importance of the given statement.

Maxwell's equations are derived from the laws of .......

What was used to detect the radio waves?

In the charging of a capacitor,what is the contradiction in Ampere's circuital law?

Suppose that the electric flux inside a parallel plate capacitor changes at a rate of $7 \times 10^{14} \text{ V} \cdot \text{m/s}$. If the area of the plates is $1 \text{ m}^2$,calculate the magnetic field $B$ at a distance $r = 0.1 \text{ m}$ from the axis of the capacitor. (Given: $\varepsilon_0 = 8.85 \times 10^{-12} \text{ F/m}$,$\mu_0 = 4\pi \times 10^{-7} \text{ T} \cdot \text{m/A}$)