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JEE Main 31 August 2021, Shift 2, Physics Q23

Question 23 of 90 in this shift, Physics question 23 of 30, Section B.

A parallel plate capacitor of capacitance 200

\mu

F is connected to a battery of 200 V. A dielectric slab of dielectric constant 2 is now inserted into the space between plates of capacitor while the battery remain connected. The change in the electrostatic energy in the capacitor will be ________ J.

Official answer

NTA final key.

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

Same idea in other shifts

Asked 3× in all

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
29 Jun 2022, Shift 1 · Q47A parallel plate capacitor filled with a medium of dielectric constant 10, is connected across a battery and is charged. The dielectric…EasySingle correct

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 108 of the 174 JEE Main shifts held from 2017 to 2026.