That could be a power cell (battery), or more correctly, a capacitor.
transformer
Electrical Energy
Electrial energy
we used pawan chakki to transformed its electrial energy
heat energy is converted into electrial enegry when passed from magnetic energy
True. Light is a form of electromagnetic energy.
It isn't "the best"; it is useful for some specific purposes.
light
Simply put, an electronic device that stores charge is a capacitor.
by switching off the electrial items in the absence of any person
A microphone is a tool for doing just that. However sound is an exceedingly poor source of energy, which is why amplfiers are used with microphones to boost the signal.
there will be no internet and things that are made of electrial would not work.