32.EMFmotional.What is the magnitude of the induced motional EMF across the bar’s ends?A.B.√3 VC.12VD.1 VE.√32V33.Dissipation.IfR= 2.0 Ω, what is the rate of energy dissipation in the resistor?34.E-induced.Which of the following statements is/areALWAYS TRUE?I. A non-electrostatic field has an associated potential function that is unique.II. Force exerted on a charge by a non-electrostatic field follows the same equation as anelectrostatic field.III. The work done by a non-electrostatic field in moving a charge around a closed path isnon-zero.35.Omega.Consider a fully-charged10-μFcapacitor after being connected to a3.0-Vbattery.The capacitor is then disconnected from the battery and connected in series to an inductorwithL= 400 mH. What is the angular frequencyωof the electrical oscillations?A – 12

Second Long ExamSecond Semester, AY 2015–2016Physics 72For the next two items, consider a series L-R-C circuit with inductanceL= 100 mH, capaci-tanceC= 400μFand an unknown resistanceR.36.Rrrrrr.What shouldRbe so that the circuit would undergo underdamped oscillation withan angular frequency of150rad/s?A.10 ΩB.50 ΩC.140 ΩD.150 ΩE.37.Oh-see-lation.IfR= 40 Ω, which of the following correctly describes the magnitude ofthe charge in the capacitor?38.Indaksyon.Consider two stationary circuits with non-zero mutual inductance. If a currentis to be induced in the first circuit, what must be the nature of the current in the secondcircuit?39.selp indak.A coil with a self-inductance of6.5 Hcarries a current that is uniformly chang-ing at a rate of50mA/s. What is the magnitude of the induced EMF in the coil?40.MagnItic.If the current through an inductor is doubled while the inductance is kept con-stant, how would the energy stored in the inductor change ?A. doubledB. quadrupledC. halvedD. quarteredE.A – 13

Second Long ExamSecond Semester, AY 2015–2016Physics 72A – 14