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A 100 watt electric bulb is used for 10 hours. What will be the cost of electricity consumed, if the consumption cost is ₹ 5 per unit ?
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- ₹ 5
- ₹ 10
- ₹ 25
- ₹ 50
Correct Option: A
The cost of electricity will be ₹ 5.
1 unit of electricity
= 1 kwh (1 kilowatt hour)
= 100/1000 kilowatt x 10 hour
= 1 unit hence electricity bill
= 1 x 5 = ₹ 5
