Learn

Saturday, 31 October

JEE Main 2022 · PhysicsNumerical answerNumerical valueMediumMulti-step

JEE Main 30 June 2022, Shift 1, Physics Q55

Question 55 of 90 in this shift, Physics question 25 of 30, Section B.

Eight similar drops of mercury are maintained at 12 V each. All these spherical drops combine into a single big drop. The potential energy of bigger drop will be __________ E. Where E is the potential energy of a single smaller drop.

Official answer

32

NTA final key.

Chapter
Electrostatic Potential and Capacitance
Topic
Electric Potential
Idea tested
Self-Energy of a Spherical Shell

Same idea in other shifts

Asked 2× in all
  1. 26 Feb 2021, Shift 2 · Q3027 similar drops of mercury are maintained at 10 V each. All these spherical drops combine into a single big drop. The potential energy of…HardNumerical 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 108 of the 174 JEE Main shifts held from 2017 to 2026.