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State the rule to determine the direction of a force experienced by a current-carrying straight conductor placed in a magnetic field which is perpendicular to it. - Science

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प्रश्न

State the rule to determine the direction of a force experienced by a current-carrying straight conductor placed in a magnetic field which is perpendicular to it.

संक्षेप में उत्तर
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उत्तर

Fleming's Left-Hand Rule, also known as the Motor Rule, states that the thumb, first finger, and middle finger of the left hand should all be extended such that they are perpendicular to one another. The thumb indicates the direction of the conductor's motion (i.e., the direction of force acting on the conductor) if the first (fore) finger points in the direction of the magnetic field, the middle finger points in the direction of current, and so on.

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अध्याय 13: Magnetic Effects of Electric Current - Exercises [पृष्ठ २४१]

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एनसीईआरटी Science [English] Class 10
अध्याय 13 Magnetic Effects of Electric Current
Exercises | Q 15.2 | पृष्ठ २४१

संबंधित प्रश्न

When is the force experienced by a current-carrying conductor placed in a magnetic field largest?


Name the rule for finding the direction of magnetic field produced by a straight current-carrying conductor.


Describe how you will locate a current-carrying wire concealed in a wall.


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


The front face of a circular wire carrying current behaves like a north pole. The direction of current in this face of circular wire is:

(a) clockwise
(b) downwards
(c) anticlockwise
(d) upwards


When is the force experienced by a current-carrying conductor placed in a magnetic field largest?


In the simple electric motor of figure given below, the coil rotates anticlockwise as seen by the eye from the position X when current flows in the coil  

 

Is the current flowing clockwise or anticlockwise around the coil when viewed from above? 


If the current in a wire is flowing in the vertically downward direction and a magnetic field is applied from west to east, what is the direction of force in the wire?


What is the force on a current-carrying wire that is parallel to a magnetic field? Give reason for your answer. 


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: 

a current is passed through coil B by plugging the key?  

Explain your answer mentioning the name of the phenomenon involved.

 


Name three factors on which the magnitude of force on a current carrying conductor placed in a magnetic field depends and state how does the force depend on the factors stated by you.


State the unit of magnetic field in terms of the force experienced by a current carrying conductor placed in a magnetic field


Name and state the rule of determine the direction of force experienced by a current carrying straight conductor placed in a uniform magnetic field which is perpendicular to it. 


For a current in a long straight solenoid N- and S-poles are created at the two ends. Among the following statements, the incorrect statement is


Describe the activity that shows that a current-carrying conductor experiences a force perpendicular to its length and the external magnetic field. How does Fleming’s left-hand rule help us to find the direction of the force acting on the current carrying conductor?


A simple motor is made in a school laboratory. A coil of wire is mounted on an axle between the poles of a horseshoe magnet, as illustrated.

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.
  2. Why does the current in the arm BC not contribute to the turning force on the coil?

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 ______.


If the strength of the current flowing through a wire is increased, the strength of the magnetic field produced by it ______.


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.

Name the law used to identify the radioactive radiation emitted by the element.


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