Potential difference and Power

Why potential is so important for electric circuits 

History of the potential 

How to use the terms Potential, Potential difference and Voltage 

AI is wrong about electric field inside a conductor 

Why electric field inside a conductor is really small 

Two port electrical components: resistors, light bulbs, wires, switches, diodes, capacitors, inductors           Imprecise and vague - voltage is measure for push

Voltage is property of two points        Electrical energy            When a current flow through a element an electrical work is done therefore the element is transforming electric energy into another type of energy.   Voltage is electrical energy gained/lost per unit charge     E = Q * V        Voltage is aka potential difference

Electric power         Pelectrical = I * V           Efficiency of a motor           Emechanical =  Eelectrical * efficiency