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Problem 9: An electron beam is shot into a region where there is both an electric field pointing upward of magnitude E = 9.6 N/C, and a magnetic field, B, as shown in the figure. While moving through the region the electron beam stays in a straight line with speed v = 390 m/s. Randomized Variables E = 9.6 N/C v = 390 m/s Part (a) In which direction does the electric force act on the electrons? MultipleChoice: 1) Upward. 2) To the right. 3) To the left. 4) Downward. Part (b) In order to keep the electrons in a straight line, in which direction should the magnetic force act? MultipleChoice: 1) Out of the screen. 2) To the left. 3) To the right. 4) Downward. 5) Into the screen. 6) Upward. Part (c) What should the direction of the magnetic field be in order to produce the force in part (b)? MultipleChoice : 1) Out of the screen. 2) Into the screen. Part (d) Express the magnitude of the electric force using the electric field E and the elementary charge e. Expression : FE =

Problem 9: An electron beam is shot into a region where there is both an electric field pointing upward of magnitude E = 9.6 N/C, and a magnetic field, B, as shown in the figure. While moving through the region the electron beam stays in a straight line with speed v = 390 m/s. Randomized Variables E = 9.6 N/C v = 390 m/s Part (a) In which direction does the electric force act on the electrons? MultipleChoice: 1) Upward. 2) To the right. 3) To the left. 4) Downward. Part (b) In order to keep the electrons in a straight line, in which direction should the magnetic force act? MultipleChoice: 1) Out of the screen. 2) To the left. 3) To the right. 4) Downward. 5) Into the screen. 6) Upward. Part (c) What should the direction of the magnetic field be in order to produce the force in part (b)? MultipleChoice : 1) Out of the screen. 2) Into the screen. Part (d) Express the magnitude of the electric force using the electric field E and the elementary charge e. Expression : FE =

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Problem 9: An electron beam is shot into a region where there is both an electric field pointing upward of magnitude E = 9.6 N/C, and a magnetic field, B, as shown in the figure. While moving through the region the electron beam stays in a straight line with speed v = 390 m/s. Randomized Variables E = 9.6 N/C v = 390 m/s Part (a) In which direction does the electric force act on the electrons? MultipleChoice: 1) Upward. 2) To the right. 3) To the left. 4) Downward. Part (b) In order to keep the electrons in a straight line, in which direction should the magnetic force act? MultipleChoice : 1) Out of the screen. 2) To the left. 3) To the right. 4) Downward. 5) Into the screen. 6) Upward. Part (c) What should the direction of the magnetic field be in order to produce the force in part (b)? MultipleChoice : 1) Out of the screen. 2) Into the screen. Part (d) Express the magnitude of the electric force using the electric field E and the elementary charge e. Expression : FE = Select from the variables below to write your expression. Note that all variables may not be required. a, B, 0, B, d, e, E, g, h, i, j, m, P, t, v Part (e) Calculate the numerical value of the magnitude of FE, in newtons. Numeric : A numeric value is expected and not an expression. FE = Part (f) Express the magnitude of the magnetic force in terms of the elementary charge e, speed v, and B, the magnitude of the magnetic field. Expression : FB = Select from the variables below to write your expression. Note that all variables may not be required. a, B, 0, B, d, e, E, g, h, i, j, m, P, t, v Part (g) If the electron is continuing in a straight line, express the magnitude of the magnetic field in terms of v and E. Expression : B = Select from the variables below to write your expression. Note that all variables may not be required. a, B, 0, B, d, e, E, g, h, i, j, m, P, t, v Part (h) Calculate the magnitude of the magnetic field if the electron continues in a straight line, in tesla. Numeric : A numeric value is expected and not an expression. B =
Transcribed Image Text:Problem 9: An electron beam is shot into a region where there is both an electric field pointing upward of magnitude E = 9.6 N/C, and a magnetic field, B, as shown in the figure. While moving through the region the electron beam stays in a straight line with speed v = 390 m/s. Randomized Variables E = 9.6 N/C v = 390 m/s Part (a) In which direction does the electric force act on the electrons? MultipleChoice: 1) Upward. 2) To the right. 3) To the left. 4) Downward. Part (b) In order to keep the electrons in a straight line, in which direction should the magnetic force act? MultipleChoice : 1) Out of the screen. 2) To the left. 3) To the right. 4) Downward. 5) Into the screen. 6) Upward. Part (c) What should the direction of the magnetic field be in order to produce the force in part (b)? MultipleChoice : 1) Out of the screen. 2) Into the screen. Part (d) Express the magnitude of the electric force using the electric field E and the elementary charge e. Expression : FE = Select from the variables below to write your expression. Note that all variables may not be required. a, B, 0, B, d, e, E, g, h, i, j, m, P, t, v Part (e) Calculate the numerical value of the magnitude of FE, in newtons. Numeric : A numeric value is expected and not an expression. FE = Part (f) Express the magnitude of the magnetic force in terms of the elementary charge e, speed v, and B, the magnitude of the magnetic field. Expression : FB = Select from the variables below to write your expression. Note that all variables may not be required. a, B, 0, B, d, e, E, g, h, i, j, m, P, t, v Part (g) If the electron is continuing in a straight line, express the magnitude of the magnetic field in terms of v and E. Expression : B = Select from the variables below to write your expression. Note that all variables may not be required. a, B, 0, B, d, e, E, g, h, i, j, m, P, t, v Part (h) Calculate the magnitude of the magnetic field if the electron continues in a straight line, in tesla. Numeric : A numeric value is expected and not an expression. B =
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