"y's LawExperiments to study vision often need to track the movements of asubject's eye. One way of doing so is to have the subject sit in aCornea-6.0-mm-diameter coilmagnetic field while wearing special contact lenses with a coil of veryfine wire circling the edge. A current is induced in the coil each timeBthe subject rotates his eye. Consider the experiment shown in which a20-turn, 6.0-mm-diameter coil of wire circles the subject's cornea whilea 1.0T magnetic field is directed as shown. The subject begins byEyelooking straight ahead. What emf voltage is induced in the coil if thesubject shifts his gaze by 5.5° in 0.20s?

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