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प्रश्न
What type of core should be put inside a current-carrying solenoid to make an electromagnet?
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उत्तर
A soft iron rod should be put inside a current-carrying solenoid to make an electromagnet.
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
State Fleming's left-hand rule. Explain it with the help of labelled diagrams.
The force experienced by a current-carrying conductor placed in a magnetic field is the largest when the angle between the conductor and the magnetic field is:
45°
60°
90°
180°
A horizontal wire carries a current as shown in Figure below between magnetic poles N and S:
Is the direction of the force on the wire due to the magnet:
(a) in the direction the current
(b) vertically downwards
(c) opposite to the current direction
(d) vertically upwards
State the unit of magnetic field in terms of the force experienced by 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?
A current flows in a wire running between the S and N poles of a magnet lying horizontally as shown in the figure below:
The force on the wire due to the magnet is directed ____________.
What does the direction of thumb indicate in the right-hand thumb rule. In what way this rule is different from Fleming’s left-hand rule?
Observe the given figure of Fleming's Left Hand Rule and write the labels of 'A' and 'B':
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?
