JEE Main 2021 — Current Electricity Question with Solution
From: JEE Main 2021 (Online) 27th August Morning Shift
Question
First, a set of n equal resistors of 10 each are connected in series to a battery of emf 20V and internal resistance 10. A current I is observed to flow. Then, the n resistors are connected in parallel to the same battery. It is observed that the current is increased 20 times, then the value of n is ............... .
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Show full solutionCorrect answer: 20
Correct answer
20
Step-by-step explanation
In series
In parallel
In parallel
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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.