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Friday, 9 October

JEE Main 2022 · PhysicsMultiple choiceSingle correctEasyApplication

JEE Main 29 June 2022, Shift 1, Physics Q47

Question 47 of 90 in this shift, Physics question 17 of 30, Section A.

A parallel plate capacitor filled with a medium of dielectric constant 10, is connected across a battery and is charged. The dielectric slab is replaced by another slab of dielectric constant 15. Then the energy of capacitor will :
  1. (1)increase by 50%Official answer
  2. (2)decrease by 15%
  3. (3)increase by 25%
  4. (4)increase by 33%

Official answer

Option 1

NTA final key (2022 Session 1).

Chapter
Electrostatic Potential and Capacitance
Topic
Dielectrics
Idea tested
Dielectric with Battery Connected

Same idea in other shifts

Asked 2× in all
  1. 31 Jan 2024, Shift 1 · Q55A parallel plate capacitor with plate separation 5 mm is charged up by a battery. It is found that on introducing a dielectric sheet of…MediumNumerical value

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.