阿摩線上測驗
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阿摩線上測驗
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16. The figure shows a rectangular loop of wire that straddles three regions of uniform magnetic field. With B in teslas and time in seconds, the fields are B₁=3, B₂=4t, B₃=6. The dimensions are L = 2.0 m and d = 2.0 m. The circuit includes an ideal battery of 12 V. What is the magnitude of the net emf (V) in the loop?
(A) 4 (B) 28 (C) 0 (D) 40 (E) 65.0