meter that measures magnetic flux by the current it generates in a coil
When a continent deflects the movement of a current.
PermanentThere is no source of current in a compass, therefore the magnet is a permanent magnet.
a generator or alternator,if the magnetic is permanent the current produced from the coil will be alternating current ac.
Electric current is magnetic so when electric current pass through steel , steel will have the electric power and may be magnetic for awhile
If the magnetic field is caused only by a current, you can turn the current off.If you have another magnetic field, for example due to a permanent magnet, with a current you can create a magnetic field that counters the first one. But that will only work in certain regions in space; you can't cancel such a magnetic field everywhere in space.
An electromagnet (a coil around a soft iron core) will only be magnetic when current changes in the coil and so is not permanent.
Global Winds, Coriolis effect, and Continental deflections Global Winds, Coriolis effect, and Continental deflections Global Winds, Coriolis effect, and Continental deflections Global Winds, Coriolis effect, and Continental deflections
Put it in a coil which has an alternating current in it. The AC current produces a magnetic field in the coil which alternates with the changing voltage. This changes the magnetism of the permanent magnet. Gradually reduce the current in the coil and the permanent magnet will end up unmagnetised.
A : spinning a permanent magnetic object. B : changing the direction of the current flowing thru the object C: changing the charge of current flowing thru the object
The magnetic field produced by electric current in a solenoid coil is similar to that of a bar magnet.