Some students feel that guessing is like cheating—that guessing correctly means getting credit where none is due. But instead of looking at guessing as an attempt to gain undeserved points, you should look at it as a form of partial credit. Suppose you’re stumped on the question we looked at earlier regarding the charged particle moving in circular motion in a magnetic field. Though you don’t know the correct answer, you may know the answer isn’t the ideal gas law, because the question doesn’t deal with gases in any way. Suppose you also know that the answer isn’t Hooke’s Law, because Hooke’s Law deals with force exerted by a spring, and there are no springs in this question. Don’t you deserve something for that extra knowledge? Well, you do get something: when you look at this question, you can throw out C and D as answer choices, leaving you with a one in three chance of getting the question right if you guess. Your extra knowledge gives you better odds of getting this question right, exactly as extra knowledge should.