A Light-Dimmer Circuit The intensity of a lightbulb with a resistance of 120 Ω is controlled by connecting it in series with an inductor whose inductance can be varied from L = 0 to L = Lmax. This “light dimmer” circuit is connected to an ac generator with a frequency of 60 0 Hz and an rms voltage of 110 V. (a) What is the average power dissipated in the lightbulb when L = 0? (b) The inductor is now adjusted so that L = Lmax. In this case, the average power dissipated in the lightbulb is one-fourth the value found in part (a). What is the value of Lmax?
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