Question

how many unit of electricity used by your family in one year​

Answer 1

We recall the concept of electricity unit

$1$ unit =$1$  kilowatt-hour

i.e. energy consumed by device in $1$ hour.

So we calculate it for a year

Energy consumed by family in $1$ month is $72$ units

Energy consumed by family in $1$ year$=72*12$

                                                              $=8640$ units

Answer 2

Answer:Typical household power consumption is about 11,700 kWh each year

Explanation:

Electricity is measured in units of power called Watts, named to honor James Watt, the inventor of the steam engine. A Watt is the unit of electrical power equal to one ampere under the pressure of one volt. One Watt is a small amount of power.

Energy Consumption in Watt-hours = Power Rating in Wattage x Time in Hours

E = P x t        Wh

“Wh” is a small unit to measure the energy usage. To convert it to the basic electricity unit i.e. 1000 Watts per hour = 1kWh = 1 Unit of electricity, we divide it by 1000 i.e.

E = P x t ÷ 1000        (kWh)

Here,

E = Electric Energy (Consumed power in kWh)

P = Power in Watts

t = Time in hours per day

1 Unit of Electricity = 1 Board of Trade Unit = 1 B.O.T Unit = 1kWh = 1000Wh = 36 x105 … Joule or Watt-seconds = 3.6 MJ

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