Two equal and opposite charges are seperated by a small distance 2a.name the arrangement? Define it's moment? The above system is placed in an external uniform electric field E1 at an angle X.obtain a relation for the torque acting on it
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Answer:
Field in y direction gets canceled
as shown above
E in x direction =2Ecosθ
=
r
2
2 kq
r
a
(cosθ=
r
a
)
=
4πϵ
0
r
3
2q a
∴ E=
4πϵ
0
r
3
2q a
(
x
^
)
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