Sketching P-V, P-1/V and PV-P graph

Pressure of a fixed mass of gas, P, is inversely proportional to the volume of the gas, V, when the temperature is held constant.

P inversely proportional to V

P = k/V , where k is a constant.

PV = k

With these concepts, you should be able to sketch the various graph. Do not memorise them. Use your concepts from Maths to help you to recall instead.

Electromotive force (e.m.f.) vs potential difference (p.d)

DC motor and AC generator