I'm kind of new in this. Now, I'm especially talking about npn common emmiter configuration. I've read somewhere that base is made narrower to stop the recombination of minority charge with holes in base. And I assume that if base would broad then electron combine with holes creating strong electric field which repel further electron to flowing from base to collector while this field is weak in narrow base. But if narrow base results in weak electric field, then is only connection of battery between emitter and collector result in flow of current. So what's the real reason behind making of narrow base? I know I'm messing it all but I really need help with this. Thanks in advance!