26. The given figure shows, two parallel plates A and B
of charge densities to and-o respectively. Electric
intensity will be zero in region
II II III
TI
А в
(1) I only
(2) ll only
(4) Both (1) & (3)
(3) Ill only
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2
Answer:
The electric field inetensity due to the long sheet of charge is given by:
E
1
=E
2
=
2ϵ
0
σ
The electriic field intensity between plates
E
in
=E
1
−E
2
⇒E=0
The electric field intensity outside plates
E
out
=E
1
+E
2
⇒E=
ϵ
0
σ
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