Active Pups run on bateries.. Passive dont..... They both have thier advantages and disadvantages.... Its generally a prefrence issue ... EMG has recently started makeing Pasive pickups (HZ line of pickups)... They are better known for thier ACTIVE pickups... 81-85 ext.... ( the pickups that Kirk Hammet, Zakk Wylde ext use.... also Caplton, Gilmour use thier active Single coil pickups). Dimarzio, KenArmstrong Seymour Duncan ext make Passive Pickups ( though Duncan also makes a few Active Pickups like the Dave Mustaine pickups, Live Wire heavy Metal ext).
^^ In other words, active pickups have more gain, or powerful sound, while passive pickups are not that loud or sensitive. Try passive if ur a beginner, and then move to actives if u have enough control on the guitar & various accidental noises.
^^^^ yes And active can drive long chains of effects better..... I personaly prefer Passive,,,,, thiugh active have thier advantages as well
@Johny Bravo, thanks for the suggestions, and abt Faraz, im not against him or his music, i liked his music, but not really inspired by that, may be i should listen more to his music. will do that. Hey abt the "Mr.", was just kidding man.. @Double click, thanks for the suggestion abt scheter, to be honest im not interested abt the scheter designs. Will update soon...