- #1
kverma
- 1
- 0
I want to calculate the total energy consumed by my lan switch in one month.
It has a AC adapter with rating-->
Input = 100-240V ~ 0.6A
Output = 5V - 1500 mA
Note:First I will calculate in joules then convert it in kWh.
At first, i was considering calculating using the input rating so the formula goes,
E = I2Rt
E = IVt ...as V=IR
I = 0.6A
V=240V(230-240V in India)
t = 60 x 60 x 24 x 30 (for a month )
Therefore,
E = 240 x 0.6 x 60 x 60 x 24 x 30
E = 124416000 J
E = 103.68 kWh
And this is not possible as it is too much.
It will cost me around Rs.777.6 and by total bill is Rs.3000.
How is it possible?
Should I take the output rating or i am correct?
It has a AC adapter with rating-->
Input = 100-240V ~ 0.6A
Output = 5V - 1500 mA
Note:First I will calculate in joules then convert it in kWh.
At first, i was considering calculating using the input rating so the formula goes,
E = I2Rt
E = IVt ...as V=IR
I = 0.6A
V=240V(230-240V in India)
t = 60 x 60 x 24 x 30 (for a month )
Therefore,
E = 240 x 0.6 x 60 x 60 x 24 x 30
E = 124416000 J
E = 103.68 kWh
And this is not possible as it is too much.
It will cost me around Rs.777.6 and by total bill is Rs.3000.
How is it possible?
Should I take the output rating or i am correct?