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A very long wire of length $L$ and charge per length $\lambda$ has a uniform positive charge. What is the magnitude of the electric field at a distance $R$ from the wire?

A

$E=\cfrac { L\lambda }{ 2{ \pi }^{ 2 }R{ \epsilon}_{ 0 } }$

B

$E=\cfrac { L\lambda }{ 2{ \pi }R{ \epsilon }_{ 0 } }$

C

$E=\cfrac { \lambda }{ 2{ \pi }R{ \epsilon }_{ 0 } }$

D

$E=\cfrac { \lambda }{ 2{ \pi }RL{ \epsilon }_{ 0 } }$

E

$E=\cfrac {3 \lambda }{ 2{ \pi }RL{ \epsilon }_{ 0 } }$

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