Calculate the electricity bill amount for a month of 30 days if the following devices are used as specified three - Science - Work and Energy

Question

Calculate the electricity bill amount for a month of 30 days if the
following devices are used as specified three bulbs of 40 watt for
6 hours,refrigerator of 320 watt for 24 hours,4 tube lights of 50
watt for 6 hours,given the rate of the electricity is rupees 2 50
per unit

Ravjot Kaur · Accepted Answer

Dear student
3 bulbs of 40 watt for 6hrsRefrigerator of 320 watt for 24hrs4 tube lights of 50 watt for 6hrsCalculating electrical energy consumption of each device :1
    3 ×40×6=720Wh2
   320×24=7680Wh3
   4×50×6=1200WhTotal energy consumed720+7680+1200= 9600Wh=9
6KWh =9
6 unitsTotal electric energy for 30 days =30 x 9
6=288 unitscost of 1 unit =Rs 2
50cost of 288 units =288×2
50                           Rs 720

Regards

Calculate the electricity bill amount for a month of 30 days if the following devices are used as specified three bulbs of 40 watt for 6 hours,refrigerator of 320 watt for 24 hours,4 tube lights of 50 watt for 6 hours,given the rate of the electricity is rupees 2.50 per unit.