Question

if the rate of cost is rs 2 per kwh then a 500W kettle operating for 30 minutes will cost?

Answer 1

The cost of the electricity is equal to
$50 \: paise$



Please refer the above photograph for the used process.



SOLUTION :-


Power of kettle = 500w = 0.5 kw

Time = 30 minutes = 0.5 hours

Electricity consumption will be power multiplied by time.
So,

Electricity consumption is :-

$0.5 \times 0.5 = 0.25 \: units$


Cost of 1 unit (or 1 kwh) is Rs 2

So,

Cost of the electricity consumed by kettle is equal to :-

$0.25 \times 2 =rs \: \: 0.50 = 50paise$




KEY POINTS TO REMEMBER :-


☸️
$1000 \: \: watt = 1 \: \: kilo \: watt$


☸️
$energy = power \times time$




Thanks!

Answer 2

Answer:

0.50

Explanation: