question_answer

Electric charge q is uniformly distributed over a rod of length ℓ. The rod is placed parallel to a long wire carrying a current i. The separation between the rod and the wire is a. Find the force needed to move the rod along its length with a uniform velocity v. If it is\[\frac{{{\mu }_{0}}i}{\pi }\times xN\]. Find x. \[(q=2C,\text{ }V=2m/s,\text{ }a=1m)\]

Answer:

2.00