题目内容（请给出正确答案）

[单选题]

If the input voltage is 0.25 V and the required output voltage is 2.75 V, the value for Rf must be _______.

A.40.0 kΩ

B.20.0 kΩ

C.10.0 kΩ

D.5.0 kΩ

提问人：网友liy429 发布时间：2022-01-07

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· 有3位网友选择 C，占比37.5%
· 有2位网友选择 B，占比25%
· 有2位网友选择 D，占比25%
· 有1位网友选择 A，占比12.5%

ABCD

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