Question 921: Electrostats & 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

Electrostats & 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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