chapter21-web1

chapter21-web1 - Chapter 21 1. 2. 3. 4. 5. 6. 7. 8. 9. 10....

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1 Chapter 21 Alternating Current Circuits and Electromagnetic Waves 1. Alternating Current 2. Resistor in an AC circuit 3. Capacitor in an AC circuit 4. Inductor in an AC circuit 5. RLC series circuit 6. Resonance 7. Transformer 8. Electromagnetic waves 9. Properties of electromagnetic waves 10. Doppler effect and electromagnetic waves
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2 AC Circuit s What is alternating current? s What is an AC circuit?
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3 Resistor in an AC Circuit s What is it? s The voltage source s The concept of phase s Behavior of the resistor s What is the power dissipated by the resistor? s What is rms current? s Why do we need it? s What is the average power? s What about ohm’s law?
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4 Example – rms Current 1. For the circuit show, calculate the maximum current and voltage, rms current and voltage and rms power.
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5 Capacitors in an AC Circuit s Behavior of the capacitor s What is the Voltage and Current relationship? s What is capacitive reactance? s How do I calculate it? s How do I use ohm’s law?
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6 Inductors in an AC Circuit s Behavior of the inductor s Voltage and current relationship s What is inductive reactance? s How do I calculate it? s How do I apply ohm’s law?
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Example - Inductor 1. In a purely inductive ac circuit as shown, V max =100V. 1.
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This note was uploaded on 01/16/2012 for the course PHYSICS 105 taught by Professor Shaukatgoderya during the Spring '12 term at Tarleton.

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chapter21-web1 - Chapter 21 1. 2. 3. 4. 5. 6. 7. 8. 9. 10....

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