Formula on how to get charge between coulomb and joule

Question

anonymous · Answer

Are you looking for the relation between the two?

unklerhaukus · Answer

The electrostatic potential (voltage) [volts]

    equals electrostatic potential energy [joules] ,
     per charge [coulombs]

$$\large   {V\,[\textrm V]}=\frac{U[\textrm J]}{Q[\textrm C]}$$

Equivalently:

The electrostatic potential energy [joules] 

    equals per charge [coulombs],
     times electrostatic potential (voltage) [volts]

$$\large U[\textrm J] = Q[\textrm C]\cdot V\,[\textrm V]$$

unklerhaukus · Answer

so if you have the electric charge already,  and you want the electric energy, , just multiply by the voltage