Lecture11_SP10 - Topics to be covered in class:...

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Topics to be covered in class: Electromotive force, single loop circuits Single loop circuits, Kirchhoff’s voltage loop rule Multi-loop circuits, Kirchhoff’s current rule Dissipated power in a resistor Independent reading: (a) Sources of EMF (Ch.28.2)
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Batteries “pump” charges by doing work on them!
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Batteries “pump” charges by doing work on them! Inside the resistor: Electric field does positive work, “friction” (collisions) do the negative work by dissipating the entire work done by e-field into heat! Inside the battery: Electric field does negative work on the charge, which is compensated by the positive work done by “non- electric” forces (mechanical, solar, chemical,…)
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Voltage loop rule for the simplest circuit!
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Real battery = ideal EMF source + resistor!
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Voltage loop rule: The sum of all voltage gains and drops around any closed loop in a circuit equals zero.
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Voltage loop rule: The sum of all voltage gains and drops around any closed loop in a circuit equals
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This note was uploaded on 02/10/2011 for the course PHY 303L taught by Professor Turner during the Spring '08 term at University of Texas at Austin.

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Lecture11_SP10 - Topics to be covered in class:...

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