- #1
Lim Y K
- 26
- 0
For example
A computer with a power rating of 400w is switched on for 5 hours for a period of one week. What is the amount of electrical energy used?
I calculated using E=PxT
400w x (5hours x 7daysx 60mins x 60 seconds)
=50400000j
But the answer is 14kwh
Why is this so? I thought its power (in watts) x time (in seconds)?
A computer with a power rating of 400w is switched on for 5 hours for a period of one week. What is the amount of electrical energy used?
I calculated using E=PxT
400w x (5hours x 7daysx 60mins x 60 seconds)
=50400000j
But the answer is 14kwh
Why is this so? I thought its power (in watts) x time (in seconds)?