मराठी

How Does One Understand this Motional Emf by Invoking the Lorentz Force Acting on the Free Charge Carriers of the Conductor?

Advertisements
Advertisements

प्रश्न

How does one understand this motional emf by invoking the Lorentz force acting on the free charge carriers of the conductor? Explain.

Advertisements

उत्तर

The magnetic force `(qvecvxxvecB)`component of the Lorentz force is responsible for motional electromotive force. When a conductor is moved through a magnetic field, the magnetic force tries to push the free electrons through the wire, and this creates the motional EMF.

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
2013-2014 (March) All India Set 3

व्हिडिओ ट्यूटोरियलVIEW ALL [1]

संबंधित प्रश्‍न

The figure shows three infinitely long straight parallel current carrying conductors. Find the

  1. magnitude and direction of the net magnetic field at point A lying on conductor 1,
  2. magnetic force on conductor 2.


Derive the expression for force per unit length between two long straight parallel current carrying conductors. Hence define one ampere.


An electron beam projected along the positive x-axis deflects along the positive y-axis. If this deflection is caused by a magnetic field, what is the direction of the field? Can we conclude that the field is parallel to the z-axis?



The magnetic field existing in a region is given by  `vecB = B_0(1 + x/1)veck` . A square loop of edge l and carrying a current i, is placed with its edges parallel to the xy axes. Find the magnitude of the net magnetic force experienced by the loop.


Two long, straight wires, each carrying a current of 5 A, are placed along the x- and y-axis respectively. The currents point along the positive directions of the axes. Find the magnetic fields at the points (a) (1 m, 1 m), (b) (−1 m, 1 m), (c) (−1 m, −1 m) and (d) (1 m, −1 m). 


Three coplanar parallel wires, each carrying a current of 10 A along the same direction, are placed with a separation 5.0 cm between the consecutive ones. Find the magnitude of the magnetic force per unit length acting on the wires. 


Answer the following question.
Two infinitely long straight wire A1 and A2 carrying currents I and 2I flowing in the same direction are kept' distance apart. Where should a third straight wire A3 carrying current 1.5 I be placed between A1 and A2 so that it experiences no net force due to A1 and A2? Does the net force acting on A3 depend on the current flowing through it?


If a current I is flowing in a straight wire parallel to x-axis and magnetic field is there in the y-axis then, ______.


According to Ampere's circuital law, ______.


Two long parallel wires kept 2 m apart carry 3A current each, in the same direction. The force per unit length on one wire due to the other is ______.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×