(a) A velocity selector consists of electric and magnetic fields described by the expressions E = Ek and B = Bj, with B = 25.0 mT. Find the value of E (in kV/m) such that a 700 ev electron moving in the negative x-direction is undeflected. 178.92 x 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?
(a) A velocity selector consists of electric and magnetic fields described by the expressions E = Ek and B = Bj, with B = 25.0 mT. Find the value of E (in kV/m) such that a 700 ev electron moving in the negative x-direction is undeflected. 178.92 x 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?
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Transcribed Image Text:(a) A velocity selector consists of electric and magnetic fields described by the expressions E = Ek and B = Bj, with B = 25.0 mT. Find the value of E (in kV/m) such that a 700 ev electron moving in the negative x-direction is undeflected.
178.92
X 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?
1.28e6
X Mev
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