Calculate tge electric energy consumed when a bulb of 100W is used for 5 hours daily, in a month with 30 days. If electric energy costs ₹3 per unit, calculate the expenditure for that month on account of the bulb.
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Explanation:
1 unit = 1000-watt-hour.
60-watt-hr x 5 x 30 = 9000-watt-hr.
9000-watt-hr = 9 unit.
So, that’s 9 units of electricity that will be consumed with a 60-watt bulb for 5 hours everyday for 30 days.
Total cost will be = ₹ rate/unit x 9 unit
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