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Question

Secure l https://www.webassign.net/web/Student/Assignment.R esponses/last?dep-18317680 1 points CJ10 21 P042 Two coils have the same number of circular turns and carry the same current. Each rotates in a magnetic field as in the figure below. Coil 1 has a radius of 6.0 cm and rotates in a 0.17-T field. Coil 2 rotates in a 0.42-T field. Each coil experiences the same maximum torque. What is the radius (in cm) of coil 22 My cm Shatt Side 2 2 Side 1 Normal ine of Additional Materials section 21.6 214 PM

Explanation / Answer

maximum torque = N A I B

so N1 A1 I2 B1 = N2 A2 I2 B2

(N)(pi 6^2) (I) (0.17) = (N)(pi r^2) (I )(0.42)

r = 3.82 cm

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