English

State Fleming’s left-hand rule. - Science

Advertisements
Advertisements

Question

State Fleming’s left-hand rule.

Short Answer
Advertisements

Solution

Stretch the forefinger, middle finger, and the thumb of your left hand mutually perpendicular to each other. If the forefinger indicates the direction of the magnetic field and the middle finger indicates the direction of the current, then the thumb will indicate the direction of motion of the conductor.

shaalaa.com
  Is there an error in this question or solution?
Chapter 10: Electro-Magnetism - EXERCISE-10 (B) [Page 246]

APPEARS IN

Selina Physics [English] Class 10 ICSE
Chapter 10 Electro-Magnetism
EXERCISE-10 (B) | Q 5. | Page 246

RELATED QUESTIONS

Consider a circular loop of wire lying in the plane of the table. Let the current pass through the loop clockwise. Apply the right-hand rule to find out the direction of the magnetic field inside and outside the loop.


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.


State the form of magnetic field lines around a straight current-carrying conductor.


Name and state the rule to determine the direction of magnetic field around a straight current-carrying conductor.


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


 List three ways in which the magnetic field strength of a current-carrying solenoid can be increased?


 Name one device whose working depends on the force exerted on a current-carrying coil placed in a magnetic field. 


The force exerted on a current-carrying wire placed in a magnetic field is zero when the angle between the wire and the direction of magnetic field is: 

 45°
 60°
 90°
 180°

 


 force experienced by a current-carrying straight conductor placed in a magnetic field which is perpendicular to it. 


Name the following diagram and explain the concept behind it.


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?


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:


The diagram below shows a free conductor AB is kept in a magnetic field and is carrying current from A to B. (To avoid confusion complete path of the circuit is not shown) The direction of the force experienced by the conductor will be:


What do you know about Michael Faraday?


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 current-carrying conductor of a certain length, kept perpendicular to the magnetic field experiences a force F. What will be the force if the current is increased four times, the length is halved and the magnetic field is tripled?


Assertion (A): A current carrying straight conductor experiences a force when placed perpendicular to the direction of magnetic field.

Reason (R): The net charge on a current carrying conductor is always zero.


A copper conductor is placed over two stretched copper wires whose ends ate connected to a D.C. supply as shown in the diagram.

  1. What should be the magnetic poles at the points A and B lying on either side of the conductor to experience the force in the upward direction?
  2. Name the law used to find these polarities.


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.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×