The electric field between two charged plates is 2000N/C. What is the voltage difference if the plates are separated by a distance of 1.0 x 10^-4 m?

I know that the answer is supposed to be .2 volts but I have no idea what formula to use??? can anyone help?!

E*distance= voltage or
E= changeinvoltage/distance

Formulas sure help. Bob knows many!