ICSE Class 10 Answered
A bulb R=100W run for 1 hour everyday. Find the bill for 30 day. (1 unit =7 )
Asked by Varsharedddi.d | 19 Dec, 2022, 07:57: AM
Expert Answer
Energy consumed by 100 W bulb in a month if it is on for 1 hour per day
Energy = power × time
Energy = 100 × 1 × 30 = 3000 W-hour = 3 kW-hour
1 kW-hour electrical energy is referred as 1 unit
Bill for switching on 100 W bulb for 1 hour in a month = 3 × 7 Rupee = Rs. 21
Answered by Thiyagarajan K | 19 Dec, 2022, 08:54: AM
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