阿摩線上測驗
50. The sliding bar has a length of 1.0 m, and moves at 3.0 m/s in a magnetic field of magnitude 0.5 T. This could induced motional emf. If the resistance in the circuit is 1.0 Ω, what is the power delivered to the resistor if the current goes counterclockwise around the loop? 
(A) 0.85 W
(B) 1.35 W
(C) 1.80 W
(D) 2.25 W
(E) 2.55 W
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統計： A(3), B(2), C(0), D(45), E(2) #2356611
統計： A(3), B(2), C(0), D(45), E(2) #2356611
