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In a Statement of Fleming'S Left-hand Rule, What Do the Following Represent? (A) Direction of Centre Finger. (B) Direction of Forefinger. (C) Direction of Thumb. - Science

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प्रश्न

In a statement of Fleming's left-hand rule, what do the following represent?

(a) direction of centre finger.
(b) direction of forefinger.
(c) direction of thumb.

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उत्तर

 In a statement of Fleming's left-hand rule:

(a) Direction of centre finger represents current.
(b) Direction of forefinger represents magnetic field.
(c) Direction of thumb represents force.

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  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 2: Magnetic Effects of Electric Current - Exercise 3 [पृष्ठ ९१]

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लखमीर सिंग Physics (Science) [English] Class 10
अध्याय 2 Magnetic Effects of Electric Current
Exercise 3 | Q 3 | पृष्ठ ९१

संबंधित प्रश्न

State Fleming’s left-hand rule.


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.


What is the shape of a current-carrying conductor whose magnetic field pattern resembles that of a bar magnet?


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


A soft iron bar is inserted inside a current-carrying solenoid. The magnetic field inside the solenoid:

(a) will decrease
(b) will increase
(c) will become zero
(d) will remain the same


The magnetic field lines in the middle of the current-carrying solenoid are?

(a) circles
(b) spirals
(c) parallel to the axis of the tube
(d) perpendicular to the axis of the tube


A current-carrying straight wire is held in exactly vertical position. If the current passes through this wire in the vertically upward direction, what is the direction of magnetic field produced by it? Name the rule used to find the direction of magnetic field. 


For Fleming's left-hand rule, write down the three things that are 90° to each other, and next to each one write down the finger or thumb that represents it.


State condition when magnitude of force on a current carrying conductor placed in a magnetic field is maximum?


Name the following diagram and explain the concept behind it.


i) Which principle is explained in this figure?
ii) Which rule is used to find out the direction of a force in this principle?
iii) In which machine this principle is used? Draw a diagram showing working of that machine


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

  1. maximum
  2. minimum?

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:


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 ____________.


Assertion (A): A magnetic field exerts a force on a moving charge in the same direction as the direction of the field itself.
Reason (R): The direction of force is given by Fleming’s left-hand rule.


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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