Question 737: Electrostatics & Capacitance

Question

Two parallel infinite line charges with linear charge densities +$\lambda $ C/m and -$\lambda $ C/m are placed at a distance of 2R in free space. What is the electric field mid-way between the two line charges?

Accepted Answer

${\overrightarrow E _{net}} = {\overrightarrow E _1} + {\overrightarrow E _2}$
= ${\lambda  \over {2\pi {\varepsilon _0}R}}$ + ${\lambda  \over {2\pi {\varepsilon _0}R}}$
= ${\lambda  \over {\pi {\varepsilon _0}R}}$ N/C

Answer

${{2\lambda } \over {\pi {\varepsilon _0}R}}$ N/C

Answer

zero

Answer

${\lambda  \over {\pi {\varepsilon _0}R}}$ N/C

Answer

${\lambda  \over {2\pi {\varepsilon _0}R}}$ N/C

Electrostatics & Capacitance

Two parallel infinite line charges with linear charge densities +\lambda C/m and -\lambda C/m are placed at a distance of 2R in free space. What is the electric field mid-way between the two line charges?

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