1.

A (100 W, 200 v) bulb is connected to a 160Vpower supply. The power consumption would be(a) 125 W(b) 100 Wc)64 Wd)80 W24There are three connar ui

Answer»

Given,Forbulb,Power,P=100W,V=200V

Asweknow,P=V^2/R,R=V^2/P=200×200/100=400Ohm

So, For160Vsupply,asV=IRSo,I=160400=0.4A

PowerConsumption,P=V I=160×0.4=64W



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