Sources of Magnetic Fields
What is the point of maximum magnetic field on the axis of a ring wire?
Two rings of radius 1 cm and parallel current I are placed a distance of 2 cm apart, as shown below. What is the magnitude of the magnetic field at the point on their common axis midway between the two rings?
A semi-infinite solenoid is a solenoid which starts at a point, and is infinite in length in one direction. What is the strength of the magnetic field on the axis of the solenoid at the end of a semi-infinite solenoid?
Two rings, both with radius b , with a common center and the same current I are placed at right angles to each other, as shown below. What is the magnitude and direction of the magnetic field at their center?