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AC Circuits, How to dissipate the maximum power in the resistor?

I have an AC circuit composing of an inductor and a resistor in series. The circuit operates at mains frequency (50Hz) and 230Vrms. The inductance is 100mH and the resistance is 50ohms.

What component can I add, and what value, in series with the R and L in order to dissipate the maximum power in the 50ohm resistor?

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