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Amplitude of voltage across inductor?

A) An AC power supply with a maximum potential of 40 V is across a series RLC circuit,where the inductance is 15 mH, the capacitance is 43 nF, the resistance is 13 ohms. Find the resonant frequency. Answer in units of kHz.(The correct answer was 6.26 kHz)B) Find the amplitude of the current at the resonant frequency.Answer in units of A.(The correct answer was 3.07A)C)Find the amplitude of the voltage across theinductor at resonance.Answer in units of V.I don't understand how to do part (c) ; It would be great if you show me how its done. Thanks !

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