JEE Main 2021 — Current Electricity Question with Solution
From: JEE Main 2021 (Online) 17th March Morning Shift
Question
The equivalent resistance of series combination of two resistors is 's'. When they are connected in parallel, the equivalent resistance is 'p'. If s = np, then the minimum value for n is ____________. (Round off to the Nearest Integer)
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Show full solutionCorrect answer: 4
Correct answer
4
Step-by-step explanation
For real roots, b2 - 4ac 0
0
2 n 2
2 n 2
n 4
So, minimum value for n = 4
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This is a previous-year question from JEE Main 2021, covering the Current Electricity chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.