Lecture 11 Electromagnetic Oscillations and Alternating Current Chp. 31

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Lecture 11 Electromagnetic Oscillations and
Alternating Current Chp. 31

• Warm-up problem
• Topics
• Transformers
• LC Circuit Qualitatively
• Electrical and Magnetic energy oscillations
• Alternating current
• Pure R and L circuits
• Series RLC circuit
• Power and Transformers
• Demos

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Axis of rotation
Coil of wire
Where w is the rotational angular frequency of
the generator
w 2pf and f 60 Hz
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Driven RLC Series Circuit
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Demonstration
1.0 uF
4.25 mH
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Series LCR circuit
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Peak value
Effective Power
rmsroot-mean-square
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