Electric field is the electric force per electric charge unit. It's originated
from the positive charge (proton) and end up at the negative charge (electron).
Electric field can be calculated with the formula below :
E (Electric field) = F (Electric force) / Q (Electric charge)
SI unit of electrical field is newtons per coulomb which equals to volt per
meter. Other common units are kilovolt per meter, millivolt per meter, volt per
inch, newton per coulomb.