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Saturday, 31 October

JEE Main 2021 · PhysicsNumerical answerNumerical valueMediumApplication

JEE Main 25 February 2021, Shift 1, Physics Q22

Question 22 of 90 in this shift, Physics question 22 of 30, Section B.

512 identical drops of mercury are charged to a potential of 2 V each. The drops are joined to form a single drop. The potential of this drop is __________ V.

Official answer

128

NTA final key.

Chapter
Electrostatic Potential and Capacitance
Topic
Electric Potential
Idea tested
Potential of a Solid Non-Conducting Sphere

Same idea in other shifts

Asked 2× in all
  1. 5 Sep 2020, Shift 1 · Q11A solid sphere of radius R carries a charge Q + q distributed uniformly over its volume. A very small point like piece of it of mass m…MediumDiagram basedHas a figure

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.