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70. ★★ A circular 100-loop coil with a radius of 0.100 m is located in the horizontal xy- plane, as shown in Figure 24-74. A 10.0 A current flows clockwise through the coil (as seen from above). The coil is in a uniform magnetic field of 1.00 T, directed in the positive y-direction with B = (1.00 T)j. (a) Calculate the magnetic moment of each loop of the coil. (b) (c) Calculate the magnetic moment of the entire coil. Calculate the magnetic torque experienced by the coil. Clearly identify the direction of the torque

70. ★★ A circular 100-loop coil with a radius of 0.100 m is located in the horizontal xy- plane, as shown in Figure 24-74. A 10.0 A current flows clockwise through the coil (as seen from above). The coil is in a uniform magnetic field of 1.00 T, directed in the positive y-direction with B = (1.00 T)j. (a) Calculate the magnetic moment of each loop of the coil. (b) (c) Calculate the magnetic moment of the entire coil. Calculate the magnetic torque experienced by the coil. Clearly identify the direction of the torque

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70. ★★ A circular 100-loop coil with a radius of 0.100 m is located in the horizontal xy- plane, as shown in Figure 24-74. A 10.0 A current flows clockwise through the coil (as seen from above). The coil is in a uniform magnetic field of 1.00 T, directed in the positive y-direction with B = (1.00 T)j. (a) Calculate the magnetic moment of each loop of the coil. (b) Calculate the magnetic moment of the entire coil. (c) Calculate the magnetic torque experienced by the coil. Clearly identify the direction of the torque. (d) How will your answers to parts (a) to (c) change if the direction of the current in the coil is reversed? (e) How will your answers to parts (a) to (c) change if the direction of the magnetic field is changed to B = (1.00 T)i or B = (1.00 T)k? Explain. (f) The coil rotates from the position where its magnetic moment is parallel to the direction of the magnetic field to the position where its magnetic moment is perpendicular to it. What is the change in the poten- tial energy of the coil? Explain. ·2R- 100 loops X
Transcribed Image Text:70. ★★ A circular 100-loop coil with a radius of 0.100 m is located in the horizontal xy- plane, as shown in Figure 24-74. A 10.0 A current flows clockwise through the coil (as seen from above). The coil is in a uniform magnetic field of 1.00 T, directed in the positive y-direction with B = (1.00 T)j. (a) Calculate the magnetic moment of each loop of the coil. (b) Calculate the magnetic moment of the entire coil. (c) Calculate the magnetic torque experienced by the coil. Clearly identify the direction of the torque. (d) How will your answers to parts (a) to (c) change if the direction of the current in the coil is reversed? (e) How will your answers to parts (a) to (c) change if the direction of the magnetic field is changed to B = (1.00 T)i or B = (1.00 T)k? Explain. (f) The coil rotates from the position where its magnetic moment is parallel to the direction of the magnetic field to the position where its magnetic moment is perpendicular to it. What is the change in the poten- tial energy of the coil? Explain. ·2R- 100 loops X
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