Magnetic Field

A particle of charge 6e enters a region containing a magnetic field with a velocity of 7.5 X 105 m/s that is perpendicular to the field. There is a force on the particle of 6.84 X 10-13 N. Find the magnetic field T.

Magnetic field

A 6.30cm diameter wire coil is initially oriented so that its plane is perpendicular to a magnetic field of 0.740T pointing up. During the course of 0.130s, the field is changed to one of 0.310 T pointing down. What is the average induced emf in the coil?

Magnetism

The magnetic field perpendicular to a circular loop of wire 17.6cm in diameter is changed from +0.510 T to -0.450 T in 117rms, where + means the field points away from an observer and - toward the observer. Calculate the induced emf.

Magnetism

A 17.2 cm diameter circular loop of wire is in a 1.13 T magnetic field. It is removed from the field in 0.110s. What is the average induced emf?

magnetic field

A long horizontal wire carries a current of It = 49.4 A. A seond wire (I), made of 2.30mm diameter copper wire and parallel to the first but L=17.6cm below it, is held in suspension magnetically. what is the current in the lower wire? use right as positive direction.