Yeah they'll usually call you and make an offer. Just tell them you have applied to a few other places and would like to receive all offers before making a decision. If the job is something you'd be starting pretty soon, don't wait longer than a week to get back to them. And if you pick somewhere else, be sure to notify the company you are passing on.
--
"It's a magical world, Hobbes ol' buddy...let's go exploring!" - Calvin
http://img.imgcake.com/calvinfinalpngpy.png