l T-Mobile 9:23 PM webassign.net An eight turn coil encloses an elliptical area
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l T-Mobile 9:23 PM webassign.net An eight turn coil encloses an elliptical area having a major axis of 40.0 cm and a minor axis of 30.0 cm. The coil lies in the plane of the screen and has a 6.45 A current flowing clockwise around it. If the coil is in a uniform magnetic field of 2.07 10-4 T directed toward the left of the screen, what is the magnitude of the torque on the coil? (Hint: The area of an ellipse is A = ab, where a and b are, respectively, the semimajor and semiminor axes of the ellipse.) Need Help? Show My Work (Optional) 0 A 70 turn coil of radius 4.8 cm rotates in a uniform magnetic field having a magnitude of 0.48 T. If the coil carries a current of 35 mA, find the magnitude of the maximum torque exerted on the coil. Need Help? Show My Work (Optional) 0 An electron moving in a direction perpendicular to a uniform magnetic field at a speed of 3.1 10 m/s undergoes an acceleration of 5.0 1016 m/s2 to the right (the positive x-direction) when its velocity is upward (the positive y-direction). Determine the magnitude and direction of the field. magritude Your response differs from the correct answer by more than 100%. T Show My Work (Optional)Explanation / Answer
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Area
A=piab =pi*(0.4/2)*(0.3/2)=0.09425 m2
Torque acting on the coil is
T=NIABSIn90 =NIAB
T=8*6.45*0.09425*(2.07*10-4)
T=1.0067*10-3 N-m
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