A TMS (transeranial magnetic stimulation) device creates very rapidly changing magnetic fields. The field near a typical pulsed-field machine rises from 0 T to 2.5 T in 200 μs. Suppose a technician holds his hand near the device so that the axis of his 2.0-cm-diameter wedding hand is parallel to the field.
a. What emf is induced in the ring as the field changes?
b. If the band is made of a gold alloy with resistivity 6.2 × 10–8 Ω · m and has a cross-section area of 4.0 nun’, what is the induced current?
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