Describe the following problem in detail- problem 1-, Ask an Expert

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Describe the following problem in detail-

Problem 1- What is the velocity of a beam of electrons that goes undeflected when moving perpendicular to an electric and magnetic fields, E and B are also perpendicular to each other and have magnitudes 7500V/m and8.9×10^?3T , respectively.

Problem 2- What is the radius of the electron orbit if the electric field is turned off?

I need explain in brief of the above problem.

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