Home
Class 12
PHYSICS
What is the direction of the force actin...

What is the direction of the force acting on a charged particle q, moving with a velocity `vec(v)` a uniform magnetic field `vec(B)` ?

Text Solution

Verified by Experts

`becausevecF=q(vecvxxvecB)`
Magnetic force is always perpendicular to magnetic field.
Promotional Banner

Topper's Solved these Questions

  • ELECTRODYNAMICS

    RESONANCE ENGLISH|Exercise Advanced level problems|31 Videos

  • ELECTRODYNAMICS

    RESONANCE ENGLISH|Exercise Exercise-3 PART-2|27 Videos

  • ELECTRO MAGNETIC WAVES

    RESONANCE ENGLISH|Exercise Exercise 3|27 Videos

  • ELECTROMAGNETIC INDUCTION

    RESONANCE ENGLISH|Exercise A.l.P|19 Videos

Similar Questions

Explore conceptually related problems

Define one tesla using the expression fo the magnetic force acting on a particle of charge .q. moving with velocity vec(v) in a magnetic field vec(B) .

(a) Write the expression for the magnetic force acting on a k charged particle moving with velocity v in the presence of magnetic field B . (b) A neutron an electron and an alpha particel moving with equal velocities enter a uniform magnetic field going into the plane of the paper as shown. Trace their paths in the field and justify your answer .

The magnetic flux linked with a vector area vec(A) in a uniform magnetic field vec(B) is

Write the expression for the magnetic force vecF acting on a charged particle q moving with vec upsilon in the presence of the magnetic field vec B in a vector form. Show that no work is done and no change in the magnitude of the velocity of the particle is produced by this force. Hence define the unit of magnetic field.

Answer the following: (a) Write the expression for the force vec(F) acting on a particle of mass m and charge q moving with velocity vecV in a magnetic field vecB . Under what conditions will it move in (i) a circular path and (ii) a helical path ? (b) Show that the kinetic energy of the particle moving a magnetic field remains constant.

(a) Write the expression for the force, vecF , acting on a charged particle of charge 'q', moving with a velocity vecV in the presence of both electric field vecE and magnetic field vecB . Obtain the condition under which the particle moves undeflected through the fields. (b) A rectangular loop of size lxxb carrying a steady current I is placed in a uniform magnetic field vecB . Prove that the torque vectau acting on the loop is given by vectau=vecmxxvecB," where "vecm is the magnetic moment of the loop.

The direction of the magnetic force on a positive charge q moving with velocity v in a uniform magnetic field B for the following cases. (i) magnetic field is out of the plane of paper and velocity vector is eastward (ii) magnetic field is directed South ward and velocity vector is in south west direction.

Write an expression in a vector form for the Lorentz magnetic force vecF on a charge Q moving with velocity vecV in a magnetic field vecB . What is the direction of the magnetic force?

A particle of specific charge q//m = (pi) C//kg is projected from the origin towards positive x-axis with a velocity of 10 m//s in a uniform magnetic field vec(B) = -2 hat K Tesla. The velocity vec V of the particle after time t =1//6 s will be

A particle of specific charge q//m = (pi) C//kg is projected from the origin towards positive x-axis with a velocity of 10 m//s in a uniform magnetic field vec(B) = -2 hat K Tesla. The velocity vec V of the particle after time t =1//6 s will be

RESONANCE ENGLISH-ELECTRODYNAMICS-Exercise-3 PART-3
  1. Figure shows a rectangular current carrying loop placed 2 cm away from...

    Text Solution

    |

  2. A beam of electrons projected along + x-axis , experiences a force due...

    Text Solution

    |

  3. What is the direction of the force acting on a charged particle q, mov...

    Text Solution

    |

  4. Define magnetic susceptibility of a material. Name two elements, one...

    Text Solution

    |

  5. Magnetic field liness can be entirely confined within the core of a to...

    Text Solution

    |

  6. An electron does not suffer any deflection while passing through a reg...

    Text Solution

    |

  7. Write the expression for the magnetic moment (m) due to a planar squar...

    Text Solution

    |

  8. A long straight wire, of circular cross section (radius =a) carries a ...

    Text Solution

    |

  9. A beam of alpha particles projected along +x- axis , experiences a fo...

    Text Solution

    |

  10. Deduce an expression for the magnetic dipole moment of an electron orb...

    Text Solution

    |

  11. The permeability of magnetic material is 0.9983. Name the type of magn...

    Text Solution

    |

  12. A magnetic needle free to rotate in a vertical plane parallel to the m...

    Text Solution

    |

  13. (a)Using Ampere's circuital law, obtain the expression for the magneti...

    Text Solution

    |

  14. (a) Write the expression for the force, vecF, acting on a charged part...

    Text Solution

    |

  15. What are permanent magnets? Give one example.

    Text Solution

    |

  16. A proton and a deuteron having equal momenta enter in a a region of a ...

    Text Solution

    |

  17. In given diagrams write the direction of magnetic field produced at po...

    Text Solution

    |

  18. Write Biot-Savart law. Write the path of motion of an electron when i...

    Text Solution

    |

  19. A long straight wire of a circular cross section (radius a) carrying s...

    Text Solution

    |

  20. Using the concept of force between two infinitely long parallel curren...

    Text Solution

    |