# Practice Midterm 02-solutions - barron (jmb7952) Practice...

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barron (jmb7952) – Practice Midterm 02 – yao – (56125)1Thisprint-outshouldhave18questions.Multiple-choice questions may continue onthe next column or page – find all choicesbefore answering.00110.0pointsConsider the circuit16.6 Ω33.2 Ω33.2 Ω16.6 Ω33.2 ΩabWhat is the equivalent resistance betweenthe pointsaandb?Solution:This circuit can be analyzed bystraight-forward series/parallel analysis:R4andR5are in series, soR45=R+ 2R= 3R .R2andR3are in parallel withR45, so1R2345=12R+12R+13R=86RR2345=3R4.R1andR2345are in series, soReq=R+3R4=7R4
barron (jmb7952) – Practice Midterm 02 – yao – (56125)200310.0pointsA 2 ohm resistor and a 4 ohm resistor areconnected in parallel to a 6 volt battery.r.The same voltageVis applied acrossthe ends of both conductors.Thepower dissipatedin the resistorisbyr.The same voltageVis applied acrossthe ends of both conductors.
thereforeP=IV= (3 A)(6 V) = 18 WConsider two conductors 1 and 2 made of thesame ohmic material (ρ1=ρ2).Denote thelength of the conductor byand the radius

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