Question

An electric kettle rated 2.2 Kw works for 4 hours a day. Calculate the no of units consumed by it in 20 days.

Answer 1

Step 1: Given Data

Power of a fan P = $2.2KW$

No of hours per day = $4h$

Total time period (T) = $Hoursperday\times totaldays$ = $4h\times 20days=80h$

Time period (T) = $80Hours$

Step 2: Formula used

We need to find the energy consumed in one month.

$Workdone=Power\left(P\right)\times Time\left(T\right)$

Calculation of energy,

$Workdone=2.2kw\times 80h=176KJ$

Hence, the energy consumed is 176 KJ.