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6. In a standard lecture demonstration, a loop of wire, with radius a and resistance R, levitates over a magnetic-field producing coil. loop of wire i = i, cos ot Assuming the B field is uniform and vertical in the vicinity of the loop, and has mag- nitude given by |B| = Bo cos wt, find the current in the loop, ignoring self-inductance. Find the magnitude of the magnetic force. Can you explain why the loop stays up? 7. In the preceding problems it was stated that self-inductance was to be ignored. How would the solutions be modified if self-inductance were not ignored?

6. In a standard lecture demonstration, a loop of wire, with radius a and resistance R, levitates over a magnetic-field producing coil. loop of wire i = i, cos ot Assuming the B field is uniform and vertical in the vicinity of the loop, and has mag- nitude given by |B| = Bo cos wt, find the current in the loop, ignoring self-inductance. Find the magnitude of the magnetic force. Can you explain why the loop stays up? 7. In the preceding problems it was stated that self-inductance was to be ignored. How would the solutions be modified if self-inductance were not ignored?

University Physics Volume 2
University Physics Volume 2
18th Edition
ISBN:9781938168161
Author:OpenStax
Publisher:OpenStax
Chapter14: Inductance
Section: Chapter Questions
Problem 74AP: Two long, parallel wires cy equal currents in opposite directions. The radius of each wire is a, and...
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6. In a standard lecture demonstration, a loop of wire, with radius a and resistance R, levitates over a magnetic-field producing coil. loop of wire i = i, cos ot Assuming the B field is uniform and vertical in the vicinity of the loop, and has mag- nitude given by |B| = Bo cos wt, find the current in the loop, ignoring self-inductance. Find the magnitude of the magnetic force. Can you explain why the loop stays up? 7. In the preceding problems it was stated that self-inductance was to be ignored. How would the solutions be modified if self-inductance were not ignored?
Transcribed Image Text:6. In a standard lecture demonstration, a loop of wire, with radius a and resistance R, levitates over a magnetic-field producing coil. loop of wire i = i, cos ot Assuming the B field is uniform and vertical in the vicinity of the loop, and has mag- nitude given by |B| = Bo cos wt, find the current in the loop, ignoring self-inductance. Find the magnitude of the magnetic force. Can you explain why the loop stays up? 7. In the preceding problems it was stated that self-inductance was to be ignored. How would the solutions be modified if self-inductance were not ignored?
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