A cross section of three parallel wires each carrying a current of 20 A. The current in wire B is out of the paper, while that in wires A and C are into the paper. If the distance R = 15.0 mm,

what is the magnitude of the force on a 200 cm length of wire C?

Complete Question

The diagram for this question is shown on the first uploaded image

The magnitude of force is  

Explanation:

 From the question we are told that

          The current in wire A , B and C are  

          The distance is

           The length of wire C is

Generally the force exerted per unit length  that is acting in between two current carrying conductors can be mathematically represented as

   Where is the permeability  of free space with a constant value of  

When the current in the wire are of the same direction  the force is positive and when they are in opposite direction the force is negative

   Considering force between A and C

   Considering force between B and C    

The resultant force is

Substituting values

-4 on

molecules are free to separate from each other and will take on the shape of the container. molecules move completely at random and high speeds. they vibrate in a fixed position and do not move around much. molecules expand to the edge of their container.