Question

in your house everyday 40 watts of 2 electric bulb runs for 2 hours, 60 watt of one bulb runs for 2 hours 250 watt tv for 2 hours, 808 of electric stove for 2 hours, for a unit charge is rupees 3.25 paise, then how much they pay for the month of September​

Answer 1

Answer:

We know energy = (P×t×days/1000)kWh

one unit = 1kWh

for electric bulb :-

power = 2×60 = 120w

time = 2h

days = 30

energy = 120×2×30/1000

= 7.2 kWh or 7.2 units

for one bulb:-

P = 60w

t = 2h

days = 30

energy = 60×2×30/1000

= 3.6 units

for tv:-

P = 250w

t = 2h

days = 30

energy = 250×2×30/1000

= 15 units

for stove :-

P = 808w

t = 2h

days = 30

energy = 808×2×30/1000

= 48.48 units

total unit = 48.48+15+3.6+7.2

= 74.28 units

one unit = 3.25p

74.28 unit = 3.25×74.28

= 241.41p

ANSWER = ₹241.41

Hope it helped :)