The Potential Difference or Voltage Drop can be considered the voltage difference between any two points in a circuit. It is also the difference in electric potential between the final and the initial ...

The simplest complete circuit is a piece of wire from one end of a battery to the other. An electric current can flow in the wire from one end of the battery to the other, but nothing useful happens.

Higher Physics - current, potential difference, power and resistance. revision-guideHigher Physics - current, potential difference, power and resistance Brush up on your current, potential difference, ...