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2024年8月北美A卷 · 第 22 题

2024年8月北美A卷 · 原库模块 2 · Q22 原库参考解析

\( \frac{1}{R}=\frac{1}{p}+\frac{1}{q}+\frac{1}{s}+\frac{1}{32} \) 
A parallel electric circuit contains four resistors with resistances of p ohms, q ohms, s ohms, and 32 ohms. The given equation relates the resistance R, in ohms, of the circuit, to the resistances of the four individual resistors it contains. Which equation correctly expresses R in terms of p, q, and s?
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