Asked by ali

a 4.5kw electric motor is 90% efficient.how much energy it use in 20 seconds.
Answered by ajay
12 minutes
Answered by ajay
13 minutes
Answered by Elena
E=Pt/η=4500•20/0.9=100000 J =0.1 MJ
Answered by Dump of Death
100KJ
Answered by usman
90kj
Answered by MaxYeng
4.5kW = 90%
5.0kW = 100%

W= 5000W x 20
= 100000J @ 100kJ
There are no AI answers yet. The ability to request AI answers is coming soon!