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A torch bulb is rated 5v and 500Am . Calaulate power, resistance, and energy consumed in 4 hr

Answer» V=5 VA=500mA=500/1000A=1/2A=0.5AT=4hr=4×60min=240min=240min×60secTherefore t=14400 secNow,V=IR5=0.5×RR=10 OHMP=VI=5×0.5=2.5WEnergy=Work=Power×Time=2.5×14400Therefore, Energy = 36000J.


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