1. An infinitely long solenoid of radius R carries n turns perunit length and current I and is oriented such that its axis isalong the z direction. What direction must a particle of charge qbe moving such that it feels zero force (a) inside the solenoid (b)outside the solenoid
2. Find the maximum magnetic flux through a circular coil ofradius L such that L < R placed inside the solenoid of theprevious problem.
