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A Flat Rectangular Loop of Wire Is Placed Between the Poles

Question 75

Multiple Choice

A flat rectangular loop of wire is placed between the poles of a magnet,as shown in the figure.It has dimensions w = 0.60 m and L = 1.0 m,and carries a current I = 2.0 A in the direction shown.The $\vec { B }$ field due to the magnet is uniform and of magnitude 0.80 T.The loop rotates in the magnetic field and at one point the plane of the loop makes a 30° angle with the $\vec { B }$ field vector.At that instant,what is the magnitude of the torque exerted on the wire by the magnetic field? $A flat rectangular loop of wire is placed between the poles of a magnet,as shown in the figure.It has dimensions w = 0.60 m and L = 1.0 m,and carries a current I = 2.0 A in the direction shown.The \vec { B } field due to the magnet is uniform and of magnitude 0.80 T.The loop rotates in the magnetic field and at one point the plane of the loop makes a 30° angle with the \vec { B } field vector.At that instant,what is the magnitude of the torque exerted on the wire by the magnetic field? A) 0.30 N ∙ m B) 0.40 N ∙ m C) 0.48 N ∙ m D) 0.83 N ∙ m E) 0.96 N ∙ m$

A) 0.30 N ∙ m
B) 0.40 N ∙ m
C) 0.48 N ∙ m
D) 0.83 N ∙ m
E) 0.96 N ∙ m

A Flat Rectangular Loop of Wire Is Placed Between the Poles

Multiple Choice

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