JEE Main 2020 — Electrostatics Question with Solution
From: JEE Main 2020 (Online) 9th January Morning Slot
Question
Consider a sphere of radius R which carries a
uniform charge density . If a sphere of radius is carved out of it, as shown, the ratio of magnitude of electric field and ,
respectively, at points A and B due to the
remaining portion is :
This question includes a diagram. The text above accompanies the figure.
Choose an option
Show full solutionCorrect option: C
Correct answer
C
Step-by-step explanation
= (Ecomplete)center - (Eremoved)surface
= 0 -
=
= (Ecomplete)surface - (Eremoved)r =
= -
= -
=
=
= 0 -
=
= (Ecomplete)surface - (Eremoved)r =
= -
= -
=
=
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