IUB PHYS-P 105 - Inductor (2 pages)

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Inductor



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PHYS 105 1nd Edition Lecture 34 Outline of Last Lecture I Capacitor Outline of Current Lecture II Inductor III AC Circuit IV Electric Resonance RLC Circuit V Filters Current Lecture I II III Inductor When electric current flows in the wire it produces a magnetic field When electric wire is coiled together the magnetic field is concentrated in the device o This is called an inductor L o Unit of inductance is Henry H Inductor stores magnetic field or magnetic energy AC Circuit Root Means Square V o V rms max 2 o Peak to peak voltage When the Ac voltage is applied to a circuit with inductor and capacitor the impedance or reactances of the inductor and capacitor are Z L 2 fL o 1 o ZC 2 fC Capacitor The current leads the capacitor voltage by 90 degrees or the voltage lags the currents by 90 degrees Inductor The current lags the inductor voltage Electric Resonance RLC Circuit The electrical resonance circuit can be implemented Net impedance of an RLC circuit is o Z R 2 Z L Z C 2 These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute IV Power dissipated in a circuit is P IVxcos o Cos power factor Measures the amount of dissipative part of the power of the circuit Filters Electronic circuit that allows selective frequency to pass Low pass or high pass filters can be built by RC or RL circuit Cut off frequencies are 1 o f C 2 RC f C 2 L o



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