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22.8 Exercise 8

Avg difficulty 2.5

A proton has a magnetic field due to its spin on its axis. The field is similar to that created by a circular current loop 0.650×10−15m0 . \text{650} \times \text{10}^{- \text{15}} m in radius with a current of 1.05×104A1 . \text{05} \times \text{10}^{4} A (no kidding). Find the maximum torque on a proton in a 2.50-T field. (This is a significant torque on a small particle.)

OpenStax College Physics 2e, 22.8 Torque on a Current Loop: Motors and Meters, exercise 8

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Adapted from College Physics © 2022 Rice University. Licensed under CC BY 4.0. Sources: College Physics 2e, College Physics for AP® Courses 2e. Imported at revision f98d7a7.