小明晚上在书房做功课,把台灯插头插入书桌边的插座,闭合台灯

 小明晚上在书房做功课,把台灯插头插入书桌边的插座,闭合台灯开关,发现家里的空气开关“跳闸”。造成这一现象的原因可能是 (    )

A.台灯的灯丝断了

 B.台灯内部短路

C.台灯的功率过大

D.插座与台灯插头接触不良

 

答案

B

解析:略

 

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