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13 GroupsCircuitProblemSolving

# 13 GroupsCircuitProblemSolving - Logistics Exam next Wed 16...

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Craig Ogilvie Logistics § Exam next Wed 16 Feb: 8 to 9:30pm Rooms for exams on BB Formula sheet: bring your own. » One 4 inch by 6 inch card, both sides Constants printed on the exam package on BB § Review Room 3 11

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Craig Ogilvie Review lecture 12 § Core principles behind circuit analysis Energy conservation , » power supplies increase potential energy, resistors dissipate this energy Charge conservation » sum of current into junction = sum of current out of junction 22 = loop V 0
Craig Ogilvie Goals 1. Worked problems on Circuit problem-solving 2. Group projects 33

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Craig Ogilvie Circuit problem, 1st round 44 R1=R2=R3=R4 = 4.50 ε =9.0 V If you want to find the current through battery, which strategy should you use? 1. Find Req for the circuit 2. Four unknowns, I1 to I4, so use Kirchhoff’s loop and junction laws to eliminate I2 to I4 1 of 30
Craig Ogilvie Circuit problem, 2nd round 55 1 2 0% 100% R1=R2=R3=R4 = 4.50 ε =9.0 V If you want to find the current through battery, which strategy should you use? 1 of 30

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13 GroupsCircuitProblemSolving - Logistics Exam next Wed 16...

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