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  4. Electric field due to an infinite line of charge, as shown in figure (I), a point P at a distance r from the line is E. If wire is folded at point A, so that both parts lie alongside as shown in figure (II), then express electric field at P in vector form.

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Q. Electric field due to an infinite line of charge, as shown in figure (I), a point $P$ at a distance $r$ from the line is $E$. If wire is folded at point $A$, so that both parts lie alongside as shown in figure (II), then express electric field at $P$ in vector form.Physics Question Image

Electric Charges and Fields

Solution:

Correct answer is (a) $\frac{E}{2} \hat{i}+\frac{E}{2} \hat{j}$