Find force per unit length at P

A condutor carrying current I is placed parallel to a current per unit width j_(0) and width d, as shown in the Find the force per unit length on the conductor .

A condutor carrying current I is placed parallel to a current per unit width j_(0) and width d , as shown in the Find the force per unit length on the conductor .

Find the force per unit length between the parallel wires kept 0.1m apart and carrying a current of 2A and 3A respectively in the same direction. What is the nature of the force?

Calculate force per unit length acting on the wire B due to the current flowing in the wire A. (see figure below)

The tangential force per unit length an imaginary line drawn on the surface of a liquid , is

A semi circular arc of radius r and a straight wire along the diameter, both are carrying same current i find out magnetic force per unit length on the small element P, which is at the centre of curvature.

Write the expression for the magnitude of force per unit length between two infinitely long parallel straight conductors.

The tangential force per unit length of an imaginary line drwan on the free surface of a liquid, is