Question

A lab tech is wearing a metal bracelet on her wrist, and she accidently brushes her wrist through an experimental set-up that has a 3.50T field with her arm pointing in the direction of the field. a. Find the average emf induced in the bracelet, given the bracelets average diameter is 8.00 cm and assuming it takes 0.20 s to move it into the field. b. What current is induced in the ring if its resistance is 0.0150 12 ? c. What average power is dissipated? d. What amount of magnetic field is induced at the center of the bracelet? e. What is the direction of the induced magnetic field relative to the original field? f. Assuming the lab tech removes the bracelet back out of the field by completing the sweeping motion of her arm, what should occur as she brings her wrist and bracelet back out of the field?

***I just need help with part f***

Answer 1

Watch/ bracelet 个 (Anticlockwise) -> When she enters her watch into magnetic field then due to movement there is change in flux and induced emf is produced E=-dagi - B.Al Ararea of at or watch/ bracelet -> T♡ n (Clockwise) in -> When she removes her bracelet bact out of the field by competing the sweeping motion of her arm then there is again change magnetic flux lines because of movement and due to this induced emf produced but the direction is opposite. -> direction will change.