Five buibs rated at 200 V - 100 W burn for 4 hours/day. What is
the cost of energy consumed, if the cost of energy consumed
per unit is 4.60?
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Given,
Potential Difference (V) = 200 V
Power (P) = 100 W
Time (t) = 4 hours
Units Consumed for one bulb = Pt/1000
= (100*4)/1000 kWh
= 0.4 kWh
Units Consumed for five bulbs = (0.4*5) kWh
= 2 kWh
If 1 kWh costs Rs. 4.60, then 2 kWh will cost = Rs. (2*4.60)
= Rs. 9.2
Cost in 1 day = Rs. 9.2
Cost in 1 month or 30 days = Rs. (9.2*30)
= Rs. 276
The Cost in 1 day is Rs. 9.2 and Cost in 1 month is Rs. 276.
I hope this helps.
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