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प्रश्न
Suppose you have three resistors of 20 Ω, 50 Ω and 100 Ω. What minimum and maximum resistance can you obtain from these resistors?
उत्तर
We can obtain maximum resistance when all the resistors are connected in series.
So, maximum resistance,
\[R_\max = \left( 20 + 50 + 100 \right) \Omega = 170 \Omega\]
The minimum resistance will be obtained when all the resistors are connected in parallel
So, minimum resistance,
\[R_\min = \frac{1}{\frac{1}{20} + \frac{1}{50} + \frac{1}{100}} = \frac{100}{8} = 12 . 5 \Omega\]
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