Question

A light bulb rated by the manufacturer as using and average power of 128.0 W when connected to a 73.0 Hz power source having a maximum voltage of Vmax = 189 V (the effective voltage under these conditions is what is called RMS voltage and is Vrms = 133.6 V), is connected in series to an identical bulb. If the resistance of the bulb is 139.5 Ω, what power would be expanded by each of the bulbs when connected in series to a source whose RMS voltage is Vrms = 133.6 V? Answer in Watts