m. The wire carries a current of 10 A in the direction shown. The loop is in a uniform magnetic field of magnitude 0.2 T and directed in the positive x direction. What is the magnitude of the torque on the loop? a) 2× 10-2 Nom b) 4 x 10-2 N•m c) 5 × 10-3 N•m d) 8 × 10-3 N•m e) 1 × 10-4 Nom T 0.08 m 10 A 0.06 m 30° X

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Chapter1: Units, Trigonometry. And Vectors
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In this question, why is the angle used in the torque equation (between the magnetic field and the current) equal to 60 degrees and not 30 degrees? 

13. A rectangular loop has sides of length 0.06 m and 0.08
m. The wire carries a current of 10 A in the direction
shown. The loop is in a uniform magnetic field of
magnitude 0.2 T and directed in the positive x direction.
What is the magnitude of the torque on the loop?
(a) 2 × 10-2 Nom
10-2
(b) 4 x
N•m
(c) 5 × 10-3 N•m
(d) 8 × 10-3 N•m
(e) 1 x 10-4 N•m
Z
T
0.08 m
y
10 A
0.06 m
30°
X
Transcribed Image Text:13. A rectangular loop has sides of length 0.06 m and 0.08 m. The wire carries a current of 10 A in the direction shown. The loop is in a uniform magnetic field of magnitude 0.2 T and directed in the positive x direction. What is the magnitude of the torque on the loop? (a) 2 × 10-2 Nom 10-2 (b) 4 x N•m (c) 5 × 10-3 N•m (d) 8 × 10-3 N•m (e) 1 x 10-4 N•m Z T 0.08 m y 10 A 0.06 m 30° X
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