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Help 4.A circuit contains an inductor of the inductance L and a resistor of resistance R in series with an AC power supply of the

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4.A circuit contains an inductor of the inductance L and a resistor of resistance R in series with an AC power supply of the maximum amplitude emf & anf frequency f. a) Draw a phasor diagram for voltages across the resistor, inductor, and power supply. b) Does the current lag or lead the emf of the power supply? c) Is resonance possible in this circuit

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