A Long Straight Wire Is Parallel to One Edge and Is

question 21

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 \(\mu\)V
• B)2.4 \(\mu\)V
• C)4.8 \(\mu\)V
• D)2.6 \(\mu\)V
• E)1.3 \(\mu\)V