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Problem: A driven RLC circuit is set up such that at its resonant frequency R = X C = XL. If the driving frequency is instead twice the resonant frequency, which the following is the phasor diagram for current and emf voltage? Consider Im to be at 45° in all options.  

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A driven RLC circuit is set up such that at its resonant frequency R = X C = XL. If the driving frequency is instead twice the resonant frequency, which the following is the phasor diagram for current and emf voltage? Consider Im to be at 45° in all options.

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