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

An equilaterial triangle ABC has a side a. Two infinitely long thin straight wires having uniform linear charge densities ' lamda ' and '-lamda' are arranged at A and B perpendicular to the plante of the triangle. The magnitude of electric intensity at the third vertex c will be

Two long wires having linear charge density lamda and - lamda are placed parallel to each other at separation ras shown in the figure. The electric field at point P will be

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 long wires are placed parallel to each other 10cm apart as shown in figure. The magnetic field at point P is

Between two infinitely long wires having linear charge densities lambda and -lambda there are two points A and B shown in the figure. The amount of work done by the electric field moving a point charge q_(0) from A to B is equal to

Two infinitely long parallel wires having linear charge densities lambda_(1) and lambda_(2) respectively are placed at a distance of R metres. The force per unit length on either wire will be (k= 1/(4piepsilon_(0)))

Two infinitely long straight conductors each having a charge density lamda are arranged parallel to each other. The spearation between them is d. What happens to the force per unit length on each conductor, when the separation between them is doubled?