2.  Witricity: Transferring electric energy or power over distance without wire.

3.  This works mainly due to induction principle but at resonant frequency maximum of the power is transferred.

4.  The coil parameters are to be designed in such a way that when they are operated at resonant frequency maximum of power is transferred.

5.  Inductance of the coil can be calculated by the formulae  Radius in inches  Length in inches  Inductance in micro henry

6. Capacitance of the coil can be found by using C = [0.1126(ℓ/D) + 0.08 + 0.27√(D/ℓ )] D Capacitance in pico-farads L- length in cm D-diameter in cm Note: parameters can be calculated by using LCR meter.

7.  Resonant frequency is found by