Question bank/JEE Main/Physics

Three metallic plates out of which middle is given a charge Q,
as shown in the figure. The outer plates can be earthed with switches S1
and S2. The area of plates is same.The charge appearing on outer surface
of external plates when S_1 and S_2 are open and external platesare
uncharged.
Ckgjh ifV~Vdkvksa dh ckgjh lrgks ij S_1 rFkk S_2

A$- \left( \frac{Q}{2} \right)$B$\left( \frac{Q}{2} \right)$CQD- Q

Show answer and solution▾

[IMAGE] (conductor pkyd)
[IMAGE] So vr -x = x + Q + y - y
2x = - Q
$x = \frac{- Q}{2}$
$- x = \frac{Q}{2}$

Source: Grass-G / P-21 Physcis Paper 19 Dec Hindi Eng..docx