A complete Calculator for electrical engineer. The calculator consists of. Ohms law calculator. Single phase. Three phase. Star to delta. Delta to star. 2 resistor in series. 2 resistor in parallel. 3 resistor in series. 3 resistor in parallel. 2 capacitor in series. 2 capacitor in parallel. 3 capacitor in series. 3 capacitor in parallel. 2 inductor in series.