Quadrupole magnets consist of groups of four magnets and are used in particle accelerators.
The image below shows four bar magnets configured to produce a quadrupole. The magnetic field lines between the magnets is marked.
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What are the poles of the magnets at P,Q R and S ?
.Important Questions on Magnetic Effects of Electric Current
The figure shows two magnets X and Y kept near each other. Their poles are not marked, but the magnetic field lines are shown in the figure.
If magnet X is moved towards magnet Y as indicated by the arrow, will the two magnets attract or repel each other? Justify your answer by describing how you interpret the field lines.
A simplified diagram of an electric motor is as shown. The loop of wire is horizontal in a horizontal magnetic field.
In which direction is the force on side of the wire loop?
How does the strength of the magnetic field at points X, Y, and Z compare?
A circular loop placed in a plane perpendicular to the plane of paper carries a current when the key is ON. The current as seen from points A and B (in the plane of paper and on the axis of the coil) is anti-clockwise and clockwise respectively. The magnetic field lines point from B to A. The N-pole of the resultant magnet is on the face close to
The diagram shows a soft iron core coiled with wire.
When the switch is turned on, iron nails are attracted. Which of the following ways, will make the soft iron core to attract all the iron nails?
A magnet is brought close to a current carrying conductor as shown in the figure, then
An alpha particle enters a uniform magnetic field as shown. The direction of force experienced by the alpha particle is:
