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A resistor with R = 310 Ω and an inductor are connected in series across an...

A resistor with R = 310 Ω and an inductor are connected in series across an ac source that has voltage amplitude 490 V . The rate at which electrical energy is dissipated in the resistor is 286 W .

What is the impedance Z of the circuit?

What is the amplitude of the voltage across the inductor?

What is the power factor?

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