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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
State Fleming’s left-hand rule.
What is the shape of a current-carrying conductor whose magnetic field pattern resembles that of a bar magnet?
Draw the magnetic lines of force due to a circular wire carrying current.
Two coils A and B of insulated wire are kept close to each other. Coil A is connected to a galvanometer while coil B is connected to a battery through a key. What would happen if:
the current is stopped by removing the plug from the key?
Explain your answer mentioning the name of the phenomenon involved.
State Fleming’s left-hand rule.
A flat coil ABCD is freely suspended between the pole of a U-shaped permanent magnet with the plane of coil parallel to the magnetic field.
When will coil come to rest?
State under what conditions force acting on a current carrying conductor which is freely suspended in a magnetic field can be Zero.
The strength of magnetic field around a current-carrying conductor is ____________.
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?
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The graph (fig A) illustrates the correlation between the number of protons (x-axis) and the number of neutrons (y-axis) for elements A, B, C, D, and E in the periodic table. These elements are denoted by the letters rather than their conventional symbols. When the element C, depicted in the graph, undergoes radioactive decay, it releases radioactive rays. When these rays are directed into the plane of the paper in the presence of a magnetic field, as indicated in the fig B, they experience deflection, causing them to move upwards.
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Name the law used to identify the radioactive radiation emitted by the element.
