Two thin parallel threads carry a uniform charge with linear densities `lambda` and `-lambda` . The distance between the threads is equal to `l`. Find the potential of the electric field and the magnitude of its strength vector at the distance `r gt gt l` at the angle `theta` to the vector 1 (fig).

Two this parallel threads carry a uniform charge with linear densities lamnda and -lambda . The distance between the threads is equal to l . Find the potential of the electric field and the magnitude of its strength vector at the distance r gt gt l at the angle theta to the vector 1 (fig).

Two uniformly long charged wires with linear densities lambda and 3lambda are placed along X and Y axis respectively. Determined the slope of electric field at any point on the l ine y=sqrt3x

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?

Each of the two long parallel threads carries a uniform charge lambda per unit length. The threads are separated by a distance l . Find the maximum magnitude of the electric firld strength in the symmetry plane of theis system located between the threads.

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

Two long straight parallel wires carry charges lambda_(1) and lamba_(2) per unit length. The distance between them is d. Calculate the magnitude of force externed on the length of one due to charge on the other.

A dipole with an electric moment p is located at a distance r from a along thread charge uniformly with a linear density lambda . Find the force F acting on the dipole if the vector p is oriented (a) along the thread (b) along the radius vector r (c ) at the right angles to the thread and the radius vector r.

A thin infinitely long thread carrying a charge lambda per unit length is oriented parallel to the infinite conducting plane. The distance between the thread and the plane is equal to l . Find : (a) the moducles of the vector of the force acting on a unit length of the thread , (b) the disribution of surface chagre density sigma (x) over the plane, where x is the distance form the plane perpendicular to the conducting surface and passing through the thread.