If a 100-watt electric bulb burns for 10 hours, then electricity is sold at the rate of Rs 5 per unit. It will cost

If a 100-watt electric bulb burns for 10 hours, it consumes 1 kilowatt hour (kWh) of electricity. Since electricity is sold at the rate of Rs 5 per unit, the cost of running the bulb for 10 hours will be Rs 5.