Inductance and LR circuits

Inductance and LR circuits - Electromagnetism Lecture 07...

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Unformatted text preview: Electromagnetism Lecture 07: Inductance and LR Circuits (Knight: 33.8-33.10) x x x x x x x x x x x x x x x x x x v F B q → → → → → → → → → → v F B q × ↑ ↑ ↑ ↑ ↑ ↑ ↑ ↑ ↑ ↑ ↑ ↑ ↑ ↑ ↑ ↑ v F = 0 B q B v q E q F × + = Physics 113 Dr. Renat Letfullin 2 • Inductance • Potential Across an Inductor • Inductors and Sparks • Energy in Inductors and Magnetic Fields • The LR Circuit Today.. . Physics 113 Dr. Renat Letfullin 3 Inductance We define the inductance L of a coil of wire producing flux Φ m as: m L I Φ ≡ The unit of inductance is the henry : 1 henry = 1 H = 1 T m 2 /A = 1 Wb/A The circuit diagram symbol used to represent inductance is: Example: The inductance of a long solenoid with N turns of cross sectional area A and length l is: NI B l μ = per turn BA Φ = 2 per turn m N A N NBA I l μ Φ = Φ = = 2 solenoid m N A L I l μ Φ = = Physics 113 Dr. Renat Letfullin 4 Activity : Length of an Inductor 2 2 2 2...
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This note was uploaded on 03/08/2009 for the course PH 113 taught by Professor Joenathan during the Fall '08 term at Rose-Hulman.

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Inductance and LR circuits - Electromagnetism Lecture 07...

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