22. Figure 4 shows the diagram of a velocity selector is a device that can choose...

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22. Figure 4 shows the diagram of a velocity selector is a device that can choose the velocity of a charged particle moving through a region in which the electric field is perpendicular to the initial velocity of the particle. To make the charged particle travel straight through the parallel plate, the downward deflection due to the electric field must equal the upward deflection due to the magnetic field. Suppose you want to design a velocity selector that will allow protons to pass through, undeflected, only if they have a speed of 5.0 x 10 m/s. (a) The magnetic field strength is B=0.05T, calculate the electric field you need. (b) What is the radius of the path that a proton takes to get to point P. M M x A B X x M W * x x x velocity selector x x x M PK N M M 1x N A M Figure 4 How was your experience of preparing for this test? Did you find electric field to be easier to handle or the magnetic field? Why? 22. Figure 4 shows the diagram of a velocity selector is a device that can choose the velocity of a charged particle moving through a region in which the electric field is perpendicular to the initial velocity of the particle. To make the charged particle travel straight through the parallel plate, the downward deflection due to the electric field must equal the upward deflection due to the magnetic field. Suppose you want to design a velocity selector that will allow protons to pass through, undeflected, only if they have a speed of 5.0 x 10 m/s. (a) The magnetic field strength is B=0.05T, calculate the electric field you need. (b) What is the radius of the path that a proton takes to get to point P. M M x A B X x M W * x x x velocity selector x x x M PK N M M 1x N A M Figure 4 How was your experience of preparing for this test? Did you find electric field to be easier to handle or the magnetic field? Why?