English

State Fleming’s left hand rule.

Advertisements
Advertisements

Questions

State Fleming’s left hand rule.

Name and state the law used to find the direction of force on a current carrying conductor kept in a magnetic field.

Short Answer
Advertisements

Solution 1

According to this rule, stretch the thumb, forefinger and middle finger of your left hand such that they are mutually perpendicular. If the first finger points in the direction of magnetic field and the second finger in the direction of the current, then the thumb will point in the direction of motion of the conductor or the force acting on the conductor.

shaalaa.com

Solution 2

Stretch the forefinger, the middle finger, and the thumb of the right hand, such that they are mutually perpendicular to each other. If the forefinger indicates the direction of the magnetic field, the middle finger indicates the direction of current in the conductor, and the thumb indicates the direction of force exerted on the conductor.

shaalaa.com
  Is there an error in this question or solution?
Chapter 4: Electricity and Magnetism - Exercise 4.3 ii [Page 206]

RELATED QUESTIONS

State whether the following statement is true or false:
The magnetic field inside a long circular coil carrying current well be parallel straight lines.


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


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?

 

 


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°


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: 

the current is stopped by removing the plug from the key? 

Explain your answer mentioning the name of the phenomenon involved. 


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 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.

Name an instrument which makes use of the principle stated above.


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


An alpha particle enters a uniform magnetic field as shown. The direction of force experienced by the alpha particle is ______.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×