1. The problem statement, all variables and given/known data A circular loop of wire is rotated at constant angular speed around an axis whose direction can be varied. In a region where a uniform magnetic field points straight down, what must be the orientation of the loop's axis of rotation if the induced emf is to be zero? 2. Relevant equations 3. The attempt at a solution I know the answer is vertical but is it vertical because the magnetic field is vertical??