Answer:
See explanations
Explanation:
The electric power generated by the windmill =P= 15 kW.
Heat dissipation by the battery =Q= 1.8 kW.
The power is generated for 1 hour.
we know, 1 kW = 1 kJ/s
Hence,
P=15*60*60 = 54000 kJ
Q=1.8*60*60 = 6480 kJ
Net power stored in the battery,
Δ
E
=
P
−
Q
Δ
E
=
54000
−
6480
Δ
E
=
47520
k
J
Total amunt of energy stored in the battery is 47520 kJ.
