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37.Zzzzzz...What is the current through the circuit?A.2.1 AB.0.92 AC.0.73 AD.0.057 ASolution:Calculate for the impedance.Z=pR2+ (XL-XC)2=p(1.6 Omega)2+ (3.8 Omega-5.4 Omega)2= 2.3 ΩUse Ohm’s law to solve for the current.V=IZ-→I=VZ=5.0 V2.3 Ω=2.1 A.38.Phase the truth.Which of the following is TRUE?39.Maikuro renji.A microwave oven from Japan is designed to run at110 VAC. It is thenrequired to run on220 VAC here in the Philippines, using a transformer. If the oven isto be connected to the secondary winding, which of the following transformer designs isappropriate in this situation?
Second Long ExamMidyear, AY 2015–2016Physics 7240.Dingdong.A doorbell requires0.40 Aof alternating current. An ideal transformer has2000turns in the primary and100turns in the secondary. What is the current in the pri-mary?