Lec20.LPN

Lec20.LPN - ture 20-1 ture LEVITATION ABOVE A...

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cture 20- cture 20- 1 LEVITATION ABOVE A SUPERCONDUCTOR
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cture 20- cture 20- 2 ©2008 by W.H. Freeman and Company
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cture 20- cture 20- 3 Resistive Load Start by considering simple circuits with one element ( R , C , or L ) in addition to the driving emf . Pick a resistor R first. v R (t) and I(t) in phase + -- I(t)
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cture 20- cture 20- 4 ©2008 by W.H. Freeman and Company
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cture 20- cture 20- 5 Capacitive Load I(t) leads v(t) by 90 o (1/4 cycle) + --
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cture 20- cture 20- 6 ©2008 by W.H. Freeman and Company
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cture 20- cture 20- 7 Inductive Load v L (t) leads I(t) by 90 o (1/4 cycle) + --
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cture 20- cture 20- 8 ©2008 by W.H. Freeman and Company
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cture 20- cture 20- 9 LC Oscillations 2 2 1 , , 2 2 E B Q dQ U U LI I C dt = = = No Resistance = No dissipation
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cture 20- cture 20- 10 10 More on LC Oscillations Period is half that of Q(t) With R=0
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cture 20- 11 11 Series RLC Circuits The resistance R may be a separate component in the circuit, or the resistance inherent in the inductor (or other parts of the circuit) may
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Lec20.LPN - ture 20-1 ture LEVITATION ABOVE A...

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