116问答网 > 图为常见的家用电器，关于它们正常工作时的电流，下列说法中合理的是（　　）A．电风扇约3AB．电冰箱约10

图为常见的家用电器，关于它们正常工作时的电流，下列说法中合理的是（　　）A．电风扇约3AB．电冰箱约10

2025-04-06 21:29:12
推荐回答（1个）
回答1：

∵P=UI，家庭电路电压U=220V；
A、电风扇功率约为30～60W，正常工作电流I=

P
U
=
P
220V
≈0.136A～0.27A，故A错误；
B、电冰箱的功率约为200W～300W，正常工作电流I=
P
U
=
P
220V
≈0.9A～1.36A，故B错误；
C、电饭煲的功率约为800W，正常工作电流I=
P
U
=
800W
220V
≈3.6A，故C错误；
D、微波炉的功率约为1100W，正常工作电流约为I=
P
U
=
1100W
220V
=5A，故D正确；
故选D．

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