An electric heater draws a current of 10 a from a 220 v supply . What is the cost of using the heater 5 hours per day for 30 days if the cost of 1 unit is rs. 2. 50 ?
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Answer:
Explanation:
AMOUNT OF ENERGY IN KWh = WATT × TIME IN HOURS / 1000
AMOUNT OF ENERGY IN KWh = 220×10×5 / 1000
COST OF ELECTRICITY = 11×PROCE OF ONE UNIT
= 11 × 2.5
= 27.5 RUPEES
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Answer is Rs.825. Solution is in the pic.
HAPPY TO HELP
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