Lecture 13—Circuits part 2 Monday, February 16. Series Resistors Slide 23-17 In series, current the same in both resistors.

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Presentation transcript:

Lecture 13—Circuits part 2 Monday, February 16

Series Resistors Slide In series, current the same in both resistors.

Parallel Resistors Slide In parallel, voltage is the same.

What is the equivalent resistance of the following circuit? Find the current in and the potential difference across each element in the following circuit. Slide 23-21

What is the potential difference across the 200 resistor? 1.2 v 2.3 v v v 5.Not enough info

Find equivalent resistor Start at right side: – Series eq = 15Ω – Two 15Ω in parallel Par eq = 7.5 Ω 10Ω 15

Continue, diagram is now Now in series equivalent = 10Ω Now in parallel equivalent = 5Ω

Continue Finally in series: – R eq =10 Ω 5 5.0

Now find all currents and voltages Find current in equivalent resistor 10v 10

Homework due Friday 22: CQ9, CQ11, CQ12, CQ15, 28, 31, 32, 35, 49, 61, 62, WB 22: 8-14 CQ9 simple loop CQ11 R=ρL/A 35 WB22-10

Homework due Today 23: 4-5 Measuring current and voltage, complex circuits—how to simplify 23: CQ1, CQ2, CQ3, 1, 4, 5, 6, 7, 10, 11, 15, 47, 52, WB 23: 1-6 CQ2 1, 5, 7, 47 WB23: 3,5