An infinitely long line, with uniform positive charge density, lies along the z-axis. In cylindrical coordinates (r, ϕ, z), at any point \(\vec P\) not on the z-axis, the direction of the electric field is

\(\frac{(\hat r+ \hat z)}{\sqrt{2}}\)

An infinitely long line, with uniform positive charge density, lies al

1.	An infinitely long line, with uniform positive charge density, lies along the z-axis. In cylindrical coordinates (r, ϕ, z), at any point \(\vec P\) not on the z-axis, the direction of the electric field is
A.	r̂
B.	ϕ̂
C.	ẑ
D.	\(\frac{(\hat r+ \hat z)}{\sqrt{2}}\)
Answer» B. ϕ̂

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An infinitely long line, with uniform positive charge density, lies along the z-axis. In cylindrical coordinates (r, ϕ, z), at any point \(\vec P\) not on the z-axis, the direction of the electric field is

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