Wireless power transmission using circuits resonating at the frequency of 50 Hz and 60 Hz. This paper is to develop a Matlab simulation and Matlab programming for calculating efficiency and max efficiency of the system for transmitting electrical power through concrete walls. The transmission efficiency that considers the copper and core losses was derived through equivalent circuit analysis. The transmission efficiency was found to be dependent on the shape of the magnet pole pieces. A transmission efficiency of 78.54%. And max efficiency of 76.57% for a load of 146.5 ohms for a rectangular shape magnet.