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A 20 volts 5 watt lamp is used on A C mains of 200 volts and (50)/(π) √(11) c.p.s. Calculate the (i) capacitor, (ii) inductor, to be put in the series to run the lamp. (iii) How much pure resistance should be included in place of the above device so that the lamp can run on its rated voltage. (iv) Which is more economical, the capacitor, the inductor or the resistor. | Numerade

A 20 volts 5 watt lamp is used in ac main of 220 volts 50 c.p.s... | Filo