magnetic pole switching

Poles of a Magnet - The magnetic force appears to be concentrated at or near the ends of the magnet. These areas are called the magnetic poles. The pole of a suspended magnet which points towards the north, is called th..

The magnetic force appears to be concentrated at or near the ends of the magnet. These areas are called the magnetic poles..

Place the soft iron piece AB flat on a table and stroke it with a bar magnet from A to B with one end of a bar magnet as shown in figure. When the magnet reaches B it is lifted, and brought back to A to repeat the stroke. After a few strokes you will notice that ..

Magnetic Field Due to a Solenoid - A solenoid is a long coil (shaped like a cylinder) containing a large number of close turns of insulated copper wire. The figure above shows a solenoid SN whose ends are connected to a battery B through a switch X. When a current is passed thro..

Laws of Magnetism - To find out about laws of magnetism you can perform the following simple experiment. Suspend a bar magnet as shown in figure, so that it can freely rotate. Allow it to come to rest. You will notice that it remains in north-south direction. Now bring..

If two magnets are placed side by side there will be mutual repulsion or attraction. This weakens the strength of the magnet. To prevent this, bar magnets are placed side by side with opposite poles near. A soft iron piece called a keeper is placed acro..

Introduction - The first magnetic phenomenon observed were those associated with naturally occurring magnets, fragments of iron ore found near the ancient city of Magnesia. These attracted unmagnetised iron. The attraction was maximum at certain regions of the magnet c..

If two magnets are placed side by side there will be mutual repulsion or attraction. This weakens the strength of the magnet. To prevent this, bar magnets are placed side by side with opposite poles near. A soft iron piece called a keeper is placed across the..

. These currents are supposed to be responsible for the terrestrial magnetic field. This magnetic field appears to enter the earth at the north pole and leaves at the south pole. It should be noted that the magnetic poles do not coincide w..

A magnetic field is defined as a region in which a magnetic force is present. In a magnetic field, the magnetic dipole (two equal and oppositely charged or magnetized poles separated by a distance) experiences a turning force, which tends ..