(a) A velocity selector consists of electric and magnetic fields described by the expressions E = EK and B = Bĵ, with B = 18.0 mT. Find the value of E (in kV/m) such that a 840 eV electron moving in the negative x-direction is undeflected. 309 ✓ kv/m (b) What If? For the value of E found in part (a), what would the kinetic energy of a proton have to be (in MeV) for it to move undeflected in the negative x-direction? MeV

(a) A velocity selector consists of electric and magnetic fields described by the expressions E = EK and B = Bĵ, with B = 18.0 mT. Find the value of E (in kV/m) such that a 840 eV electron moving in the negative x-direction is undeflected. 309 ✓ kv/m (b) What If? For the value of E found in part (a), what would the kinetic energy of a proton have to be (in MeV) for it to move undeflected in the negative x-direction? MeV

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter22: Magnetic Forces And Magnetic Fields

Section: Chapter Questions

Problem 13P

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