11.6 The Hall Effect

Crossed electric and magnetic fields as a velocity selector, and the transverse voltage that reveals carrier sign, density, and drift speed.

University Physics Volume 2, 11.6 The Hall Effect

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3 exercises

11.6 Exercise 1

A Hall probe consists of a copper strip, $n = 8.5 \times 10^{28}$ electrons per cubic meter, which is 2.0 cm wide and 0.10 cm thick. What is the magnetic field when I = 50 A and the Hall potential is (a) $4.0 \mu \text{V}$ and (b) $6.0 \mu \text{V} ?$

2.5

11.6 Exercise 2

Hall potentials are much larger for poor conductors than for good conductors with the same current. Why?

2.5

11.6 Exercise 6

A charged particle moves through a velocity selector at constant velocity. In the selector, E = $1.0 \times 10^{4} \text{N}/\text{C}$ and B = 0.250 T. When the electric field is turned off, the charged particle travels in a circular path of radius 3.33 mm. Determine the charge-to-mass ratio of the particle.

2.5