Question

How can we transmit electricity wireless over long distance

Answer 1

Simple wireless power transmission works because of the principles of magnetic resonance and magnetic induction. This power transmission system relies on two coils in range with each other and resonating at the same frequency. The coils need to be in range because the magnetic field of the source must be strong enough for the receiving coils to induce current flow. Matching resonating frequency is also needed to enable further transmission of power through magnetic induction. Modifications or an entirely new set of principles are, however, required in order to enable wireless power transmission to supply power over large distances.