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प्रश्न
State qualitatively the effect of inserting an iron core into a current-carrying solenoid.
उत्तर
If an iron core is inserted into a current carrying solenoid, it acts as a magnet. If we switch off the current in the solenoid, magnetism of the soft iron core disappears.
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संबंधित प्रश्न
A current-carrying conductor is held in exactly vertical direction. In order to produce a clockwise magnetic field around the conductor, the current should passed in the conductor:
(a) from top towards bottom
(b) from left towards right
(c) from bottom towards top
(d) from right towards left
Name and state the law which is used to determine the direction of force on a current carrying conductor placed in a magnetic field.
A flat coil ABCD is freely suspended between the pole pieces of a U-shaped permanent magnet with the plane of coil parallel to the magnetic field.
When will the couple acting on the coil be
- maximum
- minimum?
State whether a magnetic field is associated or not around a moving charge.
A current-carrying conductor is held in an exactly vertical direction. In order to produce a clockwise magnetic field around the conductor, the current should be passed in the conductor:
Which of the following factors affect the strength of force experience by current-carrying conduct in a uniform magnetic field?
A magnetic field directed in north direction acts on an electron moving in east direction. The magnetic force on the electron will act ____________.
The direction of force on a current carrying conductor in a magnetic field is given by ____________.
A copper wire is held between the poles of a magnet
The current in the wire can be reversed. The pole of the magnet can also be changed over. In how many of the four directions shown can the force act on the wire?
An alpha particle enters a uniform magnetic field as shown. The direction of force experienced by the alpha particle is ______.
