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ZX-1821FA46332024年11月A卷 · 第 14 题
2024年11月A卷 · 原库模块 2 · Q14 原库参考解析
For a certain circuit, its power \( P \), in watts, current \( C \), in amperes; voltage \( V \), in volts; and resistance \( R \), in ohms, are related as \( \frac{CV^2}{P}=\sqrt{PR} \), where \( P \), \( C \), \( V \), and \( R \) are positive. When \( R=18 \), which equation correctly expresses \( P \) in terms of \( C \) and \( V \)?
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