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JEE Advanced 2015 Question Paper 1 with solutions for online practice
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© examsnet.com
Question : 2
Total: 60
An infinity long uniform line charge distribution of charge per unit length
λ
lies parallel to the y-axis in the
y
−
z
plane at
z
=
√
3
2
a (see figure).If the magnitude of the flux of the electric field through the rectangular surface ABCD lying in the
x
−
y
plane with its center at the origin is
λ
L
n
ε
0
(
ε
0
=permittivity of free space).then the value of n is
Your Answer:
Validate
Solution:
From the figure
θ
=
60
°
So.No.of rectangular surfaces used to form a
m
=
360
60
=
6
So.
ϕ
=
(
λ
L
)
6
ε
0
.Hence 'n'=6
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