Ten 50 W bulbs are operated on an average for 10 hours a day. Find the energy consumed in kWH in one month of 30 days.

Explanation

Electrical energy consumed by Ten 50 W bulbs at the rate of 10 hours a day for 30 days = total wattage `xx` hours of use `xx 30`
`=(10xx50) xx 10 xx 30 ` watt- hours
`=(10xx50 xx 10 xx 30)/(1000) kWh = 150` kWh