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Q. 59

Physics for Scientists and Engineers: A Strategic Approach with Modern Physics
Found in: Page 831

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Short Answer

An electron travels with speed between the two parallel charged plates shown in FIGURE. The plates are separated by and are charged by a battery. What magnetic field strength and direction will allow the electron to pass between the plates without being deflected?

Magnetic field strength, and its direction is into the page

See the step by step solution

Step by Step Solution

Step1: Field of force (part a) 

When a field of force is applied to the moving charges inside a conductor, the Hall-voltage is that the steady - state condition electrical difference between the surfaces of the conductor. By equation, the Hall voltage is proportional to the present current inside the conductor and also the flux.

Where denotes the plate width. Because no magnetism is applied on the electron at the steady-state potential, the electron will tolerate the plates without deflection.

Step2: Physical phenomenon (part b)

Put the values:

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