magnetic field lines around a wire

The direction of the magnetic field due to a current may be studied by drawing the magnetic lines of force. A vertical wire AB is passed through a horizontal cardboard PQRS. Ion filings are sprinkled on the cardboard. Current is passed through it by..

If a small compass needle is placed at a point near the north pole of a bar magnet, the needle turns round on its pivot and settles in a fixed direction as shown in figure. At other points away from the pole the needle settles tangent to the field lines shown. The ..

. The iron filings experience a force due to the magnet and thus align themselves in a particular pattern. These patterns indicate the magnetic field of the magnet. A magnetic field is represented graphically by lines of force. T..

Magnetic Field Lines Due to a Current in a Straight Conductor - We need to understand the pattern of field lines around a straight conductor carrying current and also the direction of these field lines. Here is an experiment to m..

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 p..

. These patterns indicate the magnetic field of the magnet. A magnetic field is represented graphically by lines of force. The iron filings align themselves in a particular pattern which represents the magnetic field ..

The compass needle always lies along the direction of the field. The figure below shows the lines or pattern of the field, when the compass needle is placed at several places. These lines do not really, tell us the effect that magnet has on the othe..

The following two rules are used to predict the direction of the magnetic field around the wires in different situatio..

="tblcel">The lines near the centre of the loop are almost straight. The magnetic field at the centre of the loop is perpendicular to the plane of the loop Join the free ends of the wire to a battery through a plug key The concentric circles become larger as ..

Toroid is a hollow circular ring (like a medu vadai) on which a large number of turns of a wire are wound. The above figure represents a toroid wound with a wire carrying a current I. Consider path 1, by symmetry , if there is any field at all in this region, it will b..