JEE Main 2023 · PhysicsNumerical answerNumerical valueMediumCalculation

JEE Main 10 April 2023, Shift 1, Physics Q55

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

Three concentric spherical metallic shells

X

Y

and

Z

of radius

a

b

and

c

respectively

[a < b < c]

have surface charge densities

\sigma

-\sigma

and

\sigma

, respectively. The shells

X

and

Z

are at same potential. If the radii of

X

Y

are 2 cm and 3 cm, respectively. The radius of shell

Z

is ____________ cm.

Official answer

NTA final key.

Chapter: Electrostatic Potential and Capacitance
Topic: Conductors in Fields
Idea tested: Potential of Concentric Conducting Shells

Same topic in other shifts

All Conductors in Fields questions

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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.