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Friday, 9 October

NEET UG 2022 · Physics · Question 42

NEET 2022 Physics, question 42

Question 42 of the NEET 2022 paper (code R1) is a Physics question from Electrostatic Potential and Capacitance. Its idea, Charge Sharing and Common Potential, was asked twice, in 2017 and 2022, across NEET 2017–2026. The NTA final answer key gives option 4.

Updated 2026-10-08

Q42 · Physics

A capacitor of capacitance C = 900 pF is charged fully by 100 V battery B as shown in figure (a). Then it is disconnected from the battery and connected to another uncharged capacitor of capacitance C = 900 pF as shown in figure (b). The electrostatic energy stored by the system (b) is :

The figure, described in words

(a) Capacitor C charged by 100 V battery B; (b) the charged capacitor C connected in parallel with an identical uncharged capacitor C.

  1. 11.5×10−61.5\times10^{-6} J
  2. 24.5×10−64.5\times10^{-6} J
  3. 33.25×10−63.25\times10^{-6} J
  4. 42.25×10−62.25\times10^{-6} JOfficial answer

Official answer: option 4 · NTA final answer key

Same idea

Charge Sharing and Common Potential, in other papers

NEET asked this idea twice, in 2017 and 2022. The other question below.

  • 2017 Q17A capacitor is charged by a battery. The battery is removed and another identical uncharged capacitor is connected in parallel. The total…One-line MCQ · Easy

Charge Sharing and Common Potential: every question and how it was framed

The chapter

Electrostatic Potential and Capacitance in ten years of NEET

23 questions from 2017–2026, asked in 9 of 10 papers, about 2.2 a paper. Capacitance alone had 14.

Chapter analysisStudy this chapterPractise this chapter

Electrostatic Potential and Capacitance: questions per paper

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