As shown in the figure, a point charge $Q$ is placed at the centre of conducting spherical shell of inner radius a and outer radius $b$. The electric field due to charge $Q$ in three different regions I, II and III is given by: $( I : r < a , II : a < r < b , III : r > b )$

217998-q

  • [JEE MAIN 2023]
  • A

    $E _{ I }=0, E _{ II }=0, E _{ III } \neq 0$

  • B

    $E _{ I } \neq 0, E _{ II }=0, E _{ III } \neq 0$

  • C

    $E _{ I } \neq 0, E _{ II }=0, E _{ III }=0$

  • D

    $E _{ I }=0, E _{ II }=0, E _{ III }=0$

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