Unformatted text preview: gs along those lines? • Altgeld people: Sorry. Look for an email from me about what we will do. Key Concepts:
1) Understanding Kirchoff’s Rules
2) Using Kirchoff’s Rules Today’s Plan:
• Summary of Kirchoff’s rules • Example problem • Review Preflights Last Time Resistors in series:
Current through is same. Voltage drop across is IRi Reffective = R1 + R2 + R3 + ... Resistors in parallel: 1 Voltage drop across is same. Reffective Current through is V/Ri Solved Circuits R2 R1 V 1
+ + ...
R1 R2 R3 = R3 V I1234 R1234 R4
5 New Circuit
V1 V2 R2 How Can We Solve This One?
V1 V2 R3 R2 = V I1234 R12 THE ANSWER: Kirchhoff’s Rules
5 Kirchoff’s Voltage Rule ∑ ∆V i =0 Kirchoff's Voltage Rule states that the sum of the voltage
changes caused by any elements (like wires, batteries, and
resistors) around a circuit must be zero.
If we model voltage as height above the ground floor, see...
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- Spring '14
- Kirchoff, SEPTA Regional Rail, Jaguar Racing, University City, Jenkintown-Wyncote, i2