An electric refrigerator rated 400 W operate | vedclass

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(A) Given: Power $P = 400 \ W$,Time $t = 8 \ h$ per day for $30$ days,Rate $= ₹ 3.00$ per $kWh$.Total time in hours $= 8 	imes 30 = 240 \ h$.Total en

Vedclass · Accepted Answer

₹ $288.00$

Vedclass · Answer

(A) Given: Power $P = 400 \ W$,Time $t = 8 \ h$ per day for $30$ days,Rate $= ₹ 3.00$ per $kWh$.Total time in hours $= 8 	imes 30 = 240 \ h$.Total energy consumed in $kWh = \frac{P 	imes t}{1000} = \frac{400 	imes 240}{1000} = 96 \ kWh$.Cost of energy $= 	ext{Total energy} 	imes 	ext{Rate} = 96 	imes 3 = ₹ 288.00$.Therefore,the cost to operate the refrigerator for $30$ days is ₹ $288.00$.

An electric refrigerator rated $400 \ W$ operates $8 \ h$ per day. What is the cost of the energy to operate it for $30$ days at ₹ $3.00$ per $kWh$?

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