2. (a) 1 point Sketch the approximate electric field between two large plates carrying a total charge of +Q and respecti

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2 A 1 Point Sketch The Approximate Electric Field Between Two Large Plates Carrying A Total Charge Of Q And Respecti 1 (81.82 KiB) Viewed 53 times

2. (a) 1 point Sketch the approximate electric field between two large plates carrying a total charge of +Q and respectively. Assume that the distance d between the plates is small relative to the size of the plates. (b) 2 points What is the approximate) strength of the electric field between the two plates assuming each has an area A? What is the approximate) strength of the electric field outside the two plates? (c) 2 points Given the above field strength between the plates determine the total energy stored in the electric field from the volume integral ſ ugdV where ug = {{0}Ē2 is the energy density of the electric field. (d) 2 points How does your result compare to the energy stored in a capacitor with charge Q [recall that the capacitance of a plate capacitor is given by C = {]? (e) 1 point If you shoot an electron in between the two plates (such that its initial direction is parallel to the plates) describe in words the trajectory it will describe. (1) 2 points You are allowed to switch on a magnetic field of any kind. Which magnetic field would allow you to keep the electron on a straight path in between the two plates assuming it enters the two plates at a speed v? Give your answer in terms of the electron's mass me and charge -e. Make sure you state the direction of the magnetic field. Sketch both the trajectory and the magnetic field indicating which plate carries +Q and which plate carries - of charge.