हिंदी

The magnetic field inside a long straight solenoid-carrying current ______.

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प्रश्न

The magnetic field inside a long straight solenoid-carrying current ______.

विकल्प

  • is zero

  • decreases as we move towards its end

  • increases as we move towards its end

  • is the same at all points

MCQ
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उत्तर

The magnetic field inside a long straight solenoid-carrying current is the same at all points.

Explanation:

The magnetic field inside the current-carrying solenoid is constant in magnitude and direction and acts along the axis of the solenoid.

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अध्याय 12: Magnetic Effects of Electric Current - Intext Question [पृष्ठ २०२]

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एनसीईआरटी Science [English] Class 10
अध्याय 12 Magnetic Effects of Electric Current
Intext Question | Q 7. | पृष्ठ २०२

संबंधित प्रश्न

The magnetic field in a given region is uniform. Draw a diagram to represent it.


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If the current in the coil A is changed, will some current be induced in the coil B? Explain.


Fill in the following blank with suitable words: 

For a current-carrying solenoid, the magnetic field is like that of a ...........


Name the type of magnet with which the magnetic field pattern of a current-carrying solenoid resembles


What type of core should be put inside a current-carrying solenoid to make an electromagnet?


The magnetic field associated with a current-carrying straight conductor is in anticlockwise direction. If the conductor was held along the east-west direction, what will be the direction of current through it? Name and state the rule applied to determine the direction of current?

 

 


State Fleming's left-hand rule. Explain it with the help of labelled diagrams.


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 A coil ABCD mounted on an axle is placed between the poles N and S of a permanent magnet as shown in Figure.

  1. In which direction will the coil begin to rotate when current is passed through the coil in direction ABCD by connecting a battery at the ends A and D of the coil?
  2. Why is a commutator necessary for continuous rotation of the coil?
  3. Complete the diagram with commutator, etc. for the flow of current in the coil?

State two ways to increase the speed of rotation of a D.C. motor.


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The shape of the magnetic field lines produced by a current-carrying conductor is ____________.


The strength of magnetic field around a current-carrying conductor is ____________.


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?


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In the example above, coil ABCD is horizontal and the battery is connected as shown.

  1. For this position, state the direction of the force on the arm AB.
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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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