最大功率P=UI=220V×5A=1100W
可以装电灯的盏数n=
P
P 1 =
1100W
40W =27(盏)
电路中消耗电能W=
30
3000 kW•h=0.01KW•h=3.6×10 4J,
t=6min=6×60s=360s,
用电器的电功率P 2=
W
t =
3.6× 10 4 J
360s =100W,
故答案为:1100W;27;100.
最大功率P=UI=220V×5A=1100W
可以装电灯的盏数n=
P
P 1 =
1100W
40W =27(盏)
电路中消耗电能W=
30
3000 kW•h=0.01KW•h=3.6×10 4J,
t=6min=6×60s=360s,
用电器的电功率P 2=
W
t =
3.6× 10 4 J
360s =100W,
故答案为:1100W;27;100.