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Two electric lamps are rated as 220V,100W and 220V, 40W respectively. Their electric resistances are |
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Answer» `484 Omega,1210 Omega` `therefore` ELECTRICAL resistance of 100W lamp `R_1=V^2/P_1=(220 TIMES 220)/100=484 Omega` and electrical resistance of 40W lamp, `R_2=V^2/P_2=(220 times 220)/40=1210 Omega` |
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