A series circuit has an impedance of math xmlns=http://www.w3.org/1998/Math/MathMLmn60/mnmo./mom...

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A series circuit has an impedance of math xmlns=http://www.w3.org/1998/Math/MathMLmn60/mnmo./momn0/mnmiΩ/mi/math and a power factor of math xmlns=http://www.w3.org/1998/Math/MathMLmn0/mnmo./momn720/mn/math at math xmlns=http://www.w3.org/1998/Math/MathMLmn50/mnmo./momn0/mnmo /momiHz/mi/math. The source voltage lags the current.
(a) What circuit element, an inductor or a capacitor, should be placed in series with the circuit to raise its power factor?
(b) What size element will raise the power factor to unity?
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