They are Voltage (V) or (E), measured in Volts, Current or Amperage (I), measured in Amps (Amperes), and Resistance (R) measured in Ohms. The third factor will be calculated for you when you click on the Calculate button for that table. Ohm's Law is V = I x R where V = Voltage, I = Current and R = Resistance. One ohm is the resistance value through which one volt will maintain a current of one ampere.
KJV Dictionary Definition: leek leek. LEEK, n. A plant of the genus Allium, with a bulbous root. Numb. 11.
To leech is defined as to get a file on a file sharing site that is being hosted by another user without allowing your file to be copied at the same time. An example of to leech is to download a movie on IsoHunt without sharing it to other users to download.