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An electron moving with uniform velocities in x-direction enters a region of uniform magnetic field along y direction. Which of the folloeing physical quantities are non-zero and remain constant? Velocity of electron its magnitude and momentum force on it its kinetic energy P.S ( Multiple answers are acceptible)
Velocity and force change due to change in directionbut magnitude of PE and KE of electron remains constant.Speed is constant.Hence option 2 and 3 are correct
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