56. A rectangular conducting loop with resistance R lies in the same plane as a long straight wire carrying a steady current i. The nearest edge of the loop is initially at a distance a from the wire, and the loop has the width w and length L as shown in the figure. The loop is then pulled directly away from the wire with constant speed v. As the motion just begins, the induced current in the loop is ______. (Given: permeability constant μ₀)
(A)
(B) 
(C) 
(D)
(E)
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統計: 尚無統計資料