The given diagram shows two infinit...
Question
The given diagram shows two infinite line of charges having equal (in magnitude) linear charge density but with opposite sign. The direction of electric field at any
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The given diagram shows two infinite line of charges having equal (in magnitude) linear charge density but with opposite sign. The direction of electric field at any point on x-axis for ( (x>0) ) is given by the unit vect
(A) ( cos theta hat{mathrm{i}}+sin theta hat{mathrm{j}} )
(B) ì
(C) j
(D) ( -sin theta hat{i}+sin theta hat{j} )

JEE/Engineering Exams
Physics
Solution
290
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The given diagram shows two infinite line of charges having equal (in magnitude) linear charge density but with opposite sign. The direction of electric field at any point on x-axis for (x>0) is given by the unit vect
Fullscreen

from the tignec component of electric field due to positive charge along ( x ) -anis in
[
=f cos (90-theta)=sin theta
]
component of elective field due to - re is along - ue x ans and is equal fo
chage
[
=E sin theta
]
So het electric field along Xaris in 0 component of electric field due to twe
( y ) an
[
=E cos theta
]
So net fiel is along the ( y ) anis the is ( (c) hat{jmath} )

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