Home
Class 11
PHYSICS
The force on a positively charged partic...

The force on a positively charged particle is given by `vecF=qvecE+qvecvxxvecB`.In a certain space there is a magnetic field B along y-axis and an electric field along x-axis.A positively charged particle is projected into this space.Find the direction and magnitude of minimum velocity so that it may pass on undeviated.

Text Solution

Verified by Experts

The correct Answer is:
`v_("min")=E/B`, perpendicular to `vecE` and `vecB`
Promotional Banner

Topper's Solved these Questions

  • UNITS AND DIMENSION

    NN GHOSH|Exercise EXERCISE|26 Videos

  • VELOCITY OF SOUND

    NN GHOSH|Exercise EXERCISE|26 Videos

Similar Questions

Explore conceptually related problems

A positively charged particle projected towards east is deflected towards north by a magnetic field. The field may be

In a region of space, both electric and magnetic field are present simultaneously in opposite direction. A positively charged particle is projected with certain speed an angle theta (lt 90^(@)) with magnetic field. It will move in a

A positively charged particle projected towards west is deflected towards north by a magnetic field. The direction of the magnetic field is

If a charged particle (+q) is projected with certain velocity parallel to the magnetic field, then it will

The force on as charged particle due to electric and magnetic fields is given by vecF=qvecE+qvecvXvecB . Suppose vecE is along the X-axis and vecB along the Y-axis. In what direction and with whast minimum speed v should a positively charged particle be sent so that the net force on it is zero?

A positively charge particle moving along x -axis with a certain velocity enters a uniform electric field directed along positively y-axis. Its

A positively-charged particle (alpha particle) projected towards west is deflected towards north by a magnetic field. The direction of magnetic field is:

NN GHOSH-VECTOR AND SCALARS-All Questions
  1. Prove that for a vector veca defined by veca=axveci+ayvecj+azveck, the...

    Text Solution

    |

  2. If vecb and vec c be the intersecting face-diagonals of a cube of edge...

    Text Solution

    |

  3. Show that the position vector of a place on the surface of the earth w...

    Text Solution

    |

  4. A man rows a boat with a speed 10 m/s along N-E direction. The shore l...

    Text Solution

    |

  5. A force vecF=5veci+2vecj+veck displaces a body from a point with coord...

    Text Solution

    |

  6. If the sum and difference of two vectors are at right angles, show tha...

    Text Solution

    |

  7. Prove that (vecaxxvecb)^2=veca^2b^2-(veca.vecb)^2.

    Text Solution

    |

  8. Show that if two vectors are equal in magnitude, their vector sum and ...

    Text Solution

    |

  9. Find the area of the parallelogram whose sides are represented by 2h...

    Text Solution

    |

  10. Show that (veca+vecb)xx(veca-vecb)=-2(vecaxxvecb) and use this result ...

    Text Solution

    |

  11. Find the equation of a line through a point C of position vector vec c...

    Text Solution

    |

  12. Find the moment of a force , vecF=3veci+2vecj acting at point vecr=vec...

    Text Solution

    |

  13. If vecP+vecQ=vecR and vecP-vecQ=vecS, prove that vecR^2+vecS^2=2(vecP^...

    Text Solution

    |

  14. Show that a vector remains invariant (unchanged ) under rotation of co...

    Text Solution

    |

  15. Find the components of a vector vecA=2hati+3hatj along the directions ...

    Text Solution

    |

  16. The force on a positively charged particle is given by vecF=qvecE+qvec...

    Text Solution

    |

  17. A point P lies on a vector veca.the position vector of the point is ve...

    Text Solution

    |

  18. Show that if vecu.(dvecu)/(dt)=0 the vector vecu is of constant magnit...

    Text Solution

    |

  19. If veca=m vecb+vec c, find the scalar m.

    Text Solution

    |

  20. Using vector method prove that in any triangle ABC a^2=b^2+c^2-2bc cos...

    Text Solution

    |