Verified Solution • 2025–26 Session moderate

QJEEM23Ph2016: JEE Main 2023 Physics - Class 12 JEEM23Ph2016 Solution: As shown in the figure, a point charge is placed at the centre…

As shown in the figure, a point charge QQ is placed at the centre of conducting spherical shell of inner radius aa and outer radius bb . The electric field due to charge Q\mathrm{Q} in three different regions I,II\mathrm{I}, \mathrm{II} and III\mathrm{III} is given by:

(\mathrm{I}: r < a, \mathrm{II}: a < r < b , III: r>b )

JEE Main 2023 (Online) 30th January Evening Shift Physics - Electrostatics Question 79 English

Multiple Choice Options

  • A EI=0,EII=0,EIII≠0E_I=0, E_{I I}=0, E_{I I I} \neq 0
  • B EI≠0,EII=0,EIII=0E_I \neq 0, E_{I I}=0, E_{III}=0
  • C EI≠0,EII=0,EIII≠0E_I \neq 0, E_{I I}=0, E_{III} \neq 0
  • D EI=0,EII=0,EIII=0E_I=0, E_{I I}=0, E_{I I I}=0

Step-by-Step Verified Solution

EI≠0{E_I} \ne 0 (inside region)

EII=0{E_{II}} = 0 (conducting region)

EIII≠0{E_{III}} \ne 0

= {{KQ} \over {{r^2}}}\,\,\,(r > b)

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