试题与答案

如图所示的电路中,电源电压为10V,滑动变阻器的值R1=200 Ω,电阻R2=5

题型:选择题

题目:

如图所示的电路中,电源电压为10V,滑动变阻器的值R1=200 Ω,电阻R2=50 Ω,当滑动变阻器的滑片从a滑到b时,电压表的示数变化范围是

[ ]

A.0~2V

B.0~10V

C.2V~10V

D.1V~5V

答案:

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