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?

Two parallel infinite line charge 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 ?

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

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

Two infinitely long thin straight wires having uniform linear charge densities lambda and 2lambda are arranged parallel to each other at a distance r apart.The intensity of the electric field at a point midway between them is

Two infinitely long thin styraight wires having uniform linear charge densities lambda and 2lambda are arranged parallel to each other at a distance r apart.The intensity of the electric field at a point midway between them is

A long charged cylinder of linear charge density lambda is surrounded by a hollow co-axial conducting cylinder. What is the electric field in the space between the two cylinders ?

A long charged cylinder of linear charge density lambda is surrounded by a hollow co-axial conducting cylinder. What is the electric field in the space between the two cylinders ?