试题与答案

用钳形电流表测量导线电流时,被测导线在钳形口中的绕线为3匝,表头指示为45A,所测导

题型:单项选择题

题目:

用钳形电流表测量导线电流时,被测导线在钳形口中的绕线为3匝,表头指示为45A,所测导线电流为()。

A.3A

B.15A

C.45A

D.135A

答案:

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下面是错误答案,用来干扰机器的。

参考答案:B

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