induced magnetic fields?

Question

Does anyone know how to find an induced magnetic field?

Answer 1

Take a bar magnet and place one pole CLOSE to a neutral ferromagnetic length of metal... it will take on poles beacuse of the presence of the permanent magnet. Recording magnetic tape is another good example. Passing the tape over the recorder's head causes the microscopic magnetic bits on the tape surface ro re-align in response to the applied field.

Answer 2

Look whenever charges move they oscillate and thus create Electromagnetic waves and those waves have dual nature of waves and particles in Themselves and the waves too are transverse they have electric and magnetic components, The magnetic component is perpendicular to electric and that to the direction of wave propagation, now that magnetic component cause a magnetic field around the conductor which can be found by Right Hand "Thumb" rule.

Answer 3

Hi
An interesting thing about an induced magnetic field is that you can create one in a metal like aluminium that actually cannot be made magnetic.
A common use is in large busses, coaches that need to slow down they induce a magnetic field somewhere in the gear box or prop shaft that opposes the flow of motion and slows down the vehicle. ('Telma') Pretty darn good i would say.

Answer 4

http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/emfchb.html