When power supply conducts like Transistor, inductor, capacitor and other side diode like OLED, LED, LCD
here in resisitor purpose of resists the current and inductor , capacitor same as we know the purpose
In other side while LED omits the lights, so here the used Photovoltaic principle
In reisitance under the ohms law.
My doubts or questions if any other principle is there? and what is the basic think in material science?