(1)消耗电能W=Pt=1.5kw×1h=1.5kw?h.
(2)通过的电流 I=
P
U =
1500W
220V =6.8A .
(3)1s内电流做功W 1=UIt=220V×6.8A×1s=1500J.
故答案为1.5;6.8;1500.