PhysicsHardHigh School (11–12)Electricity & Magnetism › Alternating CurrentNEETAEEE (Amrita)AMUEEEAP EAPCETBCECECMI Entrance
Created by StemPy LabAn alternating voltage is applied to each arrangement below, and is the resistance of the resistor. Match each arrangement with its power factor. List-I (Arrangement) A. A pure resistor B. A pure capacitor C. A resistor in series with an inductor of reactance D. A resistor in series with a capacitor of reactance List-II (Power factor) I. II. III. IV.
← All Quizzes
← A resistor, an inductor and a capacitor are joined in series to a source of fixed rms voltage and variable frequency. The resistance is small. Two statements about the arrangement are given below.
Statement I: At resonance, the rms voltage across the inductor can be larger than the rms voltage of the source.
Statement II: Below the resonant frequency the current leads the source voltage, and above it the current lags the source voltage.The figure shows a resistor, an inductor and a capacitor in series with an alternating source of constant rms voltage. Three voltmeters read the rms voltages across them: 60 V, 100 V and 20 V. The frequency of the source is then changed until the arrangement is in resonance. The source voltage and the resistance stay the same. What does the voltmeter across the resistor read now? →
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