The following diagram shows apparatus used to measure the charge to mass ratio of anelectron. The dotted line shows the path of the electrons. The electrons have velocityv=0.2 c. Within the uniform magnetic field region, B=0.00780 T. The radius of the circlecreated by the electron beam is r = 0.045 m.(This exam question is protected by copyright law.)uniform B fieldB = 0.00780 Taccelerating plates (c) Explain how you would find the magnetic force on an electron in the beam? You donot need to calculate the actual problem. Remember to state the key physicsprinciple/equation. Define all variables, name all known variables and which are theunknown variables. Report your answer to exactly 3 significant figures and includeappropriate units.

Given: The velocity of the electron is 0.2c. The uniform magnetic field in the region is 0.00780 T.…

Answered: The following diagram shows apparatus…

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