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23.Galvanobanamanyan.Consider the setup shown where a solenoid is attached to a gal-vanometer. A stationary bar magnet is placed on the right of the solenoid where it can befreely moved. The system is immersed in a magnetic fieldB0. Which of the followingwould cause a deflection in the galvanometer?A – 12
Second Long ExamFirst Semester, AY 2016–2017Physics 72A. The presence of constantB0B. The presence of the stationary bar magnetC. Rotating the solenoid about thez-axisD. Moving the galvanometer to the leftE. deleteSolution:Change in magnetic flux due to change in orientationFor the next two items, consider a conducting bar withlength0.5 m, moving at a speed of2.0 m/s, connected toa1.0-Ωresistor as shown. The circuit is immersed in auniform magnetic field directed into the page. The barand connecting wires have negligible resistance.24.I like to move it...If the induced current through the resistor is2.0 A, what is the magnitudeof the uniform magnetic field?√34√3C.2 TE. delete25.move it!What are the directions of the induced magnetic field on the circuit,Bind, and theinduced current in the circuit,Iind?
Second Long ExamFirst Semester, AY 2016–2017Physics 7226.Magka-i-babe.Which of the following statements is/areTRUE?I. An electrostatic electric field does non-zero work in moving a point charge around aclosed path.II. An induced electric field is produced by a time-varying magnetic flux.III. An induced electric field has a corresponding potential function.27.LItong-LIto.The current passing through an inductor with inductance8 Hslowly in-creased from zero to2 Ain2 s. How much energy is stored in the inductor?A.4 JB.8 JC.16 JD.32 JE. deleteSolution:U=12LI2=12(8 H)(2 A)2= 16 J28.LRC frequency.Consider an underdamped LRC series circuit with inductanceL, capac-itanceC, and resistanceR. What value ofRwould result in an angular frequency that is90%of that whenR= 0?
Second Long ExamFirst Semester, AY 2016–2017Physics 72