Question

A television (65W), a refrigerator (1.2KW),an electric kettle (650KW),and 10 lamps (40W) each are connected in series in a house. How much will it cost to switch on all the appliances for 24 hours if the cost of electricity is 15 dollars per KWh

Answer 1

Answer:

firstly we convert all power in to same unit watt convert into killo watt so for tv 0.065kw,freez 1.2kw, electric kettle 650kw, lamp if 1 lamp power is 40 w so for 10 400 w then 0.4 kw all add together 650+1.2+0.065+0.4=651.665 kw and for electricity cunsuption for 24 hr so 651.665×24=15639.96 kwh and 1 unit = 1kwh so 15639.96×15=234599.4 dollar

Answer 2

Answer:833.4kobo

Explanation:

change everything in watt to kilowatt, then add it will give you 2.315kw

Then in 24hrs that’ll be ur answer x 24 then when u get that answer times it by 15 then you’ll get your answer.

HOPE THIS HELPED