A very long straight wire has charge per unit length 1.44×10-10C/m.

question:

At what distance from the wire is the magnitude of the electric field equal to 2.45 N/C ?
Use 8.85×10−12C2/(N*m2) for the permittivity of free space, and use π=3.14 .

[tex]E=\frac{\lambda }{2\pi \epsilon _0r}[/tex], here [tex]\lambda[/tex] is linear charge density and r is distance of the point where we have to find the electric field

So [tex]2.45=\frac{1.44\times 10^{-10} }{2\times 3.14\times 8.85\times 10^{-12}\times r}[/tex]

r = 1.06 m

So distance of the point where electric filed is 2.45 N/C is 1.06 m

A very long straight wire has charge per unit length 1.44×10-10C/m. question: At what distance from the wire is the magnitude of the electric field equal to 2.45 N/C ? Use 8.85×10−12C2/(N*m2) for the permittivity of free space, and use π=3.14 .

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A very long straight wire has charge per unit length 1.44×10-10C/m.

question:

At what distance from the wire is the magnitude of the electric field equal to 2.45 N/C ?
Use 8.85×10−12C2/(N*m2) for the permittivity of free space, and use π=3.14 .