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25.E-lin kaya?Consider cases A and B as described as follows. In case A, the electric field isproduced by a stationary charge. In case B, the electric field is produced by a time-varyingmagnetic field. Which of the following statements is/areTRUE?I. The electric field in case B is an electrostatic field.II. The electric field in case B does zero work on a charge moving around a loop.III. The electric field in case A is conservative.A. I onlyB. III onlyC. I and II onlyD. I and III only26.Dis-place seems familiar.A vacuum-filled parallel plate capacitor, with an area of1 m2,is connected to a time-varying power source.The electric field in the region betweenthe plates varies according toE(t) = 2.0 sin 10t(in SI units).What is the maximumdisplacement current in this region?27.MU.A coil is wound around a solenoid. Their mutual inductance is50.H. If the currentin the solenoid is given byi(t) =(3.0×10-3A/s)t, what is the induced emf on the outercoil?28.Self-Inductance.A100.-Hideal solenoid carries a current ofi(t) = (4.0×10-2A/s)t.What is the self-induced emf?A – 9
Second Long ExamSecond Semester, AY 2016–2017Physics 7229.Shape of U.A coil of inductance36.0 His carrying a steady current of2.00 A. How muchmagnetic energy is stored in the coil?A.18.0 JB.36.0 JC.72.0 JD.126 J30.Me Before U.What is the magnetic energy density inside a1.20 m3vacuum-filled toroidalsolenoid that produces a uniform4.80-mTmagnetic field?31.Si Elsa o si Elsi.An LC circuit consists of a charged capacitor with capacitance2.50 F,and an inductor with inductance0.900 H. Att= 0, there is no current flowing through thecircuit. At what time/s is/are the charge magnitude in the capacitor maximum?I.2.25πsII.3.00πsIII.7.50πs32.Conservation.An LC circuit has inductanceLand capacitanceC. Att= 0, the currentthrough the circuit isI0, and there is no charge stored in the capacitor. What is the chargestored in the capacitor when the current through the circuit isI0/2?
Second Long ExamSecond Semester, AY 2016–2017Physics 7233.Perfect combination.An LRC series circuit uses a3.0-μCcapacitor. Initially the capac-itor is fully charged. Which of the following values of the resistor and inductor will makethe circuit critically damped?I.R= 2.0 Ω,L= 3.0μHII.R= 4.0 Ω,L= 12.0μHIII.R= 6.0 Ω,L= 15.0μHA. I onlyB. II onlyC. III onlyD. I and II only