A 100 W electric bulb is used for 10 hours a day. How many units of electrical energy are consumed by the bulb in 3 days ? (1 unit = 1 kWh)

The commercial unit of electrical energy is kilowatt-hour (kWh), which is equal to

If a bulb of 100 watt burns for 10 hours, the expenditure of electricity will be –

The cost of energy to operate an industrial refrigerator that consumes 5 kW power working 10 hours per day for 30 days will be (Given that the charge per kWh of energy = ₹4)

15 bulbs, each of 200 watt capacity in a Silkyata tunnel are illuminated continuously for 24 hours. The consumption of electricity will be -

The instrument used for detecting the presence of electric current in a circuit is