Electric Potential

Electric potential is the amount of electric potential energy divided by charge. The equation looks like this:

PE(q)
-------- = V
q

Another name for electric potential is voltage. A volt is in Joules/Coulomb, so when the two are seen together in a physics problem, this equation might help! However, it should be noted that electric potential and electric potential energy are two entirely different things. Electric potential energy is the amount of stored energy of a charged object in an electric potential field...Anyway, it is in Joules whereas electric potential is in Joules/Coulomb.

My calculator here takes up 4 triple A batteries with 1.5 V each. Apparently, with some rewiring, we could make the calculator run on a larger, heavy duty battery instead of the tiny ones. The difference would be the endurance of the batteries and the convenience. (Who wants to carry around a bulky calculator?)