The value of k is given as 9.0 x 109 N. m^2/C^2. Which unit must be used for distance when calculating the electric force?
a. centimeters
b. meters
c. kilometers
d. micrometers

The answer for this question is: C

stands for electromotive force and it is measured in volts. despite its name, it is not actually the force in the sense of being a "pushing" or "pulling" (not measured in newtons).an equation that relates emf,  ℰ,  to a battery's terminal voltage, v, current, i, and internal resistance, r, is    ℰ = v + irin this case, the emf can be interpreted as a voltage—a difference in electric potential.i would not say that it would be considered an energy. if emf can be defined as the energy/work per a unit charge from a battery or other electric source, then it is not strictly energy.