Magnetic Forces
Problems
Problem :
A wire of length 10 cm carries a current of 5 esu/s parallel to a magnetic field of 10 gauss. What is the magnitude of the force on the wire?
Problem :
A wire of length 10 cm carries a current of 3×104 esu/s perpendicular to a magnetic field of 10 gauss. What is the magnitude of the force on the wire?
Problem :
A wire in the shape of a square with sides 5 cm carries a current of 1 amp, or 3×109 esu/sec in a plane parallel to a magnetic field of 100 gauss, as shown below. What is the net force on the wire? What is the net torque?
Problem :
In CGS units,
F =
. What does this equation convert to in SI units?
=
= 1×10-4
= 50
= 105 dynes





