A Long Straight Wire Is Parallel to One Edge and Is

question 30

Multiple Choice

A long straight wire is parallel to one edge and is in the plane of a single-turn rectangular loop as shown. If the loop is changing width so that the distance x changes at a constant rate of 4.0 cm/s, what is the magnitude of the emf induced in the loop at an instant when x = 6.0 cm? Let a = 2.0 cm, b = 1.2 m, and I = 30 A.

• A) 5.3 μV
• B) 2.4 μV
• C) 4.8 μV
• D) 2.6 μV
• E) 1.3 μV

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