Practice_Midterm_2

# Practice_Midterm_2 - Practice Midterm 2 Physics 202 SI...

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Practice Midterm 2 Physics 202 SI Problem 1 An empty solenoid has a current I=0.17 A flowing in the wire wound around it and has n=1600 turns/m. An electron (mass m m e = 9.1 10 -31 kg, charge q = -e = -1.6 10 -19 C) enters from the west with speed v=1.6 10 7 m/s and leaves going south, as shown. The radius of curvature of the electron motion is equal to R, the solenoid radius. You may neglect fringing fields. a. What is magnitude of the magnetic field in the solenoid? b. What is the magnitude of the magnetic force on the electron while it is inside the solenoid? c. Is the current I around the solenoid flowing clockwise or counterclockwise? d. What is the radius of curvature of the electron motion inside the solenoid? e. If the current I is increased to 0.39 A and iron ( =5000 0 ) inserted into the solenoid, what is then the magnitude of the magnetic field in the solenoid?

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Problem 2 At time t=0 the switch S1 is closed. Switch S2 is initially closed. The capacitors C1 and C2 are initially uncharged. a)
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Practice_Midterm_2 - Practice Midterm 2 Physics 202 SI...

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