Calculate the monthly bill for a heater of resistance 40 ohms, which is used on 220v mains, such that it's daily use is for 5 hours. the cost of electric energy is Rs 3.60 per KWh.
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Answer:
Explanation:
E=V^2t/R
R=40ohm
t=30*5=150h
V=220V
220*220*150/40=E=181500wh=181.5kwh
cost =181.5*3.6=653.4rupees
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