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In the given circuit, what is the closest approximate frequency at which the ratio ?
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Important Questions on Electromagnetic Induction and Alternating Currents
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In series A series LCR circular in connected to a.c. source of variable frequency The graphical representation of variation of impedance of the circuit with frequency will be
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A coil has reactance of when frequency is . If the frequency becomes , then the reactance will be
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The current in a circuit containing a capacitance and a resistance in series leads over the applied voltage of frequency by,
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An circuit contains . The impedance of the circuit will be minimum for a frequency of:
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A resistance, coil and capacitor are joined in series. When a variable frequency alternating current source is joined to this combination, the circuit resonates. If the resistance is halved, the resonance frequency:
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In the AC circuit given below, the voltmeter whose reading will be zero at resonance is
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For the given AC circuit, which of the following statement is incorrect?
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Calculate the power factor of circuit at resonance.
