how modulation and amplification different?why it is necessary?
Dipole antina kya hota hai
at 3:20 sir u have mistaken i think,
current is flowing downwards(current always flows from positive to negative end) so now if we apply right hand thumb rule the magnetic field should protrude out of the board towards us i.e outwards
at t=T/2 k taraf jab jate h hum, tab polarity to zero ho jani chahiye na, sirf ghatni nahi chahiye; bcoz according to graph "V=0 or E=0" at t=0,T/2 & T ??