In physics, we symbolise everything with an English/Greek alphabet, such as the speed of velocity, wavelength and other quantities as well. To make it more convenient for the students, teachers or ...

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, ...