Two parallel infinite line charges `+lamda and -lamda` are placed with a separation distance R in free space. The net electric field exactly mid-way between the two line charges is

Options

A. Zero
B. `(2lambda)/(piepsilon_(0)R)`
C. `(lambda)/(piepsilon_(0)R)`
D. `(1)/(2piepsilon_(0)R)`

Answer

B

Explanation

`phi=(q)/(epsilon_(0))or E. piRxxl=(lambdal)/(epsilon_(0))`

`E=(2lambda)/(2piepsilon_(0)R)xx2`
`E=(2lambda)/(piepsilon_(0)R)`