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(II) A Hall probe used to measure magnetic field strengths consists of a rectangular slab of material (free-electron density n) with width d and thickness t, carrying a current I along its length l. The slab is immersed in a magnetic field of magnitude B oriented perpendicular to its rectangular face (of area ld), so that a Hall emf
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- Glencoe Physics: Principles and Problems, Student...PhysicsISBN:9780078807213Author:Paul W. ZitzewitzPublisher:Glencoe/McGraw-Hill