Verified Solution • 2025–26 Session moderate

QPages 198-203: Q26: HC Verma: Concepts of Physics - Volume 2 Electric Current in Conductors Pages 198-203: Q26 Solution: Suppose you have three resistors of , and . What minimum and…

Suppose you have three resistors of 20 Ω20 \ \Omega, 50 Ω50 \ \Omega and 100 Ω100 \ \Omega. What minimum and maximum resistance can you obtain from these resistors?

Step-by-Step Verified Solution

**Answer:** Minimum resistance = 12.5\\ \\Omega, Maximum resistance = 170\\ \\Omega. **Step-by-Step Explanation:** Given 20Omega20\\ \\Omega, 50Omega50\\ \\Omega, 100Omega100\\ \\Omega. Minimum: all in parallel: 1/R=1/20+1/50+1/100=8/100RightarrowR=12.5Omega1/R = 1/20 + 1/50 + 1/100 = 8/100 \\Rightarrow R = 12.5\\ \\Omega. Maximum: all in series: R=20+50+100=170OmegaR = 20 + 50 + 100 = 170\\ \\Omega [citation:5].

All Questions in this Chapter

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