how does a charge q oscillating at certain frequency produce electromagmetic waves
Answers
Hey !!
When an electric charge is rest, there will be electric field around it. In such region without the magnetic field, moving charge produces electric and magnetic fields. Here, when the charge is moving with fixed velocity without change of time intervals, then fields will not change with time and hence there will no electromagnetic waves. When the motion of the charge accelerates, then there will be change in electric and magnetic fields with respect to space ad time which generates electromagnetic waves.
So, we see that an accelerated charge will give electromagnetic waves.
In an oscillatory L-C circuit, a charge oscillates across the capacitor plates. This oscillating charge has a non-zero acceleration, hence it emits electromagnetic waves of frequency same as that of the oscillating charge.