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# slides16all - The current and voltage are in phase in a...

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Previous Lecture Transformers Mutual inductance Self inductance LR circuits – p.

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Today Finish LR circuits Oscillations in an LC circuit ac circuits – p.
LR circuit Fig. 30-5 – p.

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LC circuit Close switch at t = 0 . Fig. 30-9 – p.
ac circuits Fig. 31-6 – p.

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Trig Formulas sin( a ± b ) = sin a cos b ± cos a sin b sin( θ ± π 2 ) = sin θ cos π 2 ± cos θ sin π 2 = ± cos θ – p.
Resistor only Maxima of V and I occur at same time. Fig.31-1

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Unformatted text preview: The current and voltage are in phase in a resistor. – p. Inductor only Fig. 31-2 Maximum of I occurs later than maximum of V. The current lags the voltage by 90 ◦ in an inductor. – p. Capacitor only Fig. 31-3 Maximum of I occurs earlier than maximum of V. The current leads the voltage by 90 ◦ in a capacitor. – p....
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slides16all - The current and voltage are in phase in a...

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