1. Electrons are accelerated from rest in an electron gun between two plates that have a voltage Vg across them. The electrons then move into the region between two other parallel plates of separation d that have voltage Vp across them. The electrons are projected into this region at an angle 0 to the plates as shown above. Assume that the entire apparatus is in vacuum and that Vp > Vg. Display all results in terms that include d, Vg, Vp, 0, e (the magnitude of the electron charge), and mo (the electron mass). a) Develop an equation for the speed Ve with which the electrons leave the electron gun. b) Develop an equation for the maximum distance ymax that the electrons travel above the lower plate. Suppose that a magnetic field directed into the plane or the paper is introduced in the region between the upper plates c) How will the speed with which the electrons strike the lower plate be affected? Explain. d) Sketch on the diagram a trajectory that an electron might follow with the magnetic field present. Account qualitatively for the difference between the new and old trajectory.

I. SOLVE THE FOLLONING PROBLENS : A COPPER WIRE OF 0,3 Mm RAAUS HAS A LEN ETH OF 1. JOM- IF THE RESISTIVITY of cOpPER IS 1-7 x0 WHAT WOULD BE THE RESISTANOE OF THE WIRE? OF A 100m WIRE IS 1035 mm AND 3.7 OHMS. WHAT 2. THE DIAMETER THE REISTANCE IS IS THE CONDUCTIVITY 3. WHAT WILL BE THE VALUE OF A CAPACITOR WHEN IT HAS A CAPACITIVE REACTANCE OF 300R ANP to A 6o HZ. SUPPLY? IN FARADS IS CONNECTED 4. WHAT Is THE VALUE OF THE RESISTOR WITH THE FOLLOWING COLORS ? A. BROWN, BLACK, GOLD, REP B. BLUE YELON BROWN, SILVER PED, SILVER, BROWN, VIOET C. 5. AND t WHEN V 220V AND R= 50n WHEN I = 45 A WHEN V = 120V FIND V ANO R 80n AND AND E= 11A-

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Calculate the equivalent resistances Rin of the following circuits. (The resistance value of the diodes in the conduction will be 0, the resistance value of the diodes in the insulation will be taken as infinity. R1=10ohm