<p>I think AP Physics C (both APs) is generally worth either the same amount or more credit than AP Physics B, never less. Schools like MIT don’t even accept AP Physics B for credit, simply because Physics B doesn’t require calculus. </p>
<p>Physics C is definitely intended to be more demanding and rigorous, but depending on your school and your teacher, you might benefit more in terms of preparedness for physics at a college level if you have, say, a really amazing AP Physics B teacher in lieu of the rather abysmal AP Physics C teacher. The actual quality of the course depends on your school.</p>