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33. Ifa bulb of 60 W is lited for 4 hours everyday for30 days, then the energy consumed is:(a) 7.2 kwh (b) 7200 kwh (c) 720 kwh (d) 72 kwh

Answer»

Power (P1) = 60W

time (t) = 4 hr

Energy consumed in one day = P * t = 60*4 = 240 wh

Therefore, energy consumed in 30 days = 30*240= 7200 wh= 7.2 kwh

(a) is correct option



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