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An electric refrigerator rated 400W operates …

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An electric refrigerator rated 400W operates 8 hr per day . What is the cost of the energy to operate it for 30days . At Rs. 3 per kwh

Posted by Shreyash Pawar 8 years, 3 months ago

CBSE > Class 10 > Science

1 answers

Khushi Pitaliya 8 years, 3 months ago

P=400w=0.4kw t=8 hr 0.4*8*30*3 Cost=Rs.288

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