# Electric field due to charge cylinder at a distance r will be (If cylinder is non cunducting, Radius given is R) Option 1) $\frac{\lambda}{2\pi\epsilon_0 R}$ Option 2) $\frac{\lambda}{2\pi\epsilon_0 }\log_e r + c$ Option 3) 0 Option 4) $\frac{\lambda}{2\pi\epsilon_0 r}$

A Avinash

As we have learnt

Charged Cylinder if P lies outside -

If Point P lies outside the cylinder

$\dpi{100} E_{out}=\frac{\lambda }{2\pi \varepsilon _{0}r}$

$\dpi{100} V_{out}=\frac{-\lambda }{2\pi \varepsilon _{0}}\log_{e}r+c$

- wherein

For conducting and non conducting both when r > R

$E = \frac{\lambda}{2\pi\epsilon_0r}$

Option 1)

$\frac{\lambda}{2\pi\epsilon_0 R}$

Option 2)

$\frac{\lambda}{2\pi\epsilon_0 }\log_e r + c$

Option 3)

0

Option 4)

$\frac{\lambda}{2\pi\epsilon_0 r}$

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