Home
Class 12
PHYSICS
A charged particle with charge q enters ...

A charged particle with charge q enters a region of constant, uniform and mutually orthogonal fields `vecE and vecB` with a velocity `vecv` perpendicular toboth `vecE and vecB`, and comes out without any change in its magnitude or direction. Then

A

`vecv=vecExxvecB//B^(2)`

B

`vecv=vecExxvecE//B^(2)`

C

`vecv=vecExxvecE//E^(2)`

D

`vecv=vecBxxvecE//E^(2)`

Text Solution

Verified by Experts

The correct Answer is:
1
`qvecvxxvecB=qvecE`...(1)
Taking cross product of equation `(1)` with `vecB`
`q(vecvxxvecB)xxvecB=q(vecExxvecB)`
`vecv=vecExxvecB//B^(2)`
Promotional Banner

Topper's Solved these Questions

  • ELECTRODYNAMICS

    RESONANCE ENGLISH|Exercise Exercise-3 PART-3|29 Videos

  • ELECTRODYNAMICS

    RESONANCE ENGLISH|Exercise Advanced level problems|31 Videos

  • ELECTRODYNAMICS

    RESONANCE ENGLISH|Exercise Exercise-3 PART-1|20 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

A charged particle with charge q enters a region of constant, uniform and mututally orthogonal fields vec(E) and vec(B) with a velocity vec(v) perpendicular to both vec(E) and vec(B) , and comes out without any change in magnitude or direction of vec(v) . Then

A charged particle having charge q and mass m is projected into a region of uniform electric field of strength vecE_(0) , with velocity vecV_(0) perpendicular to vecE_(0) . Throughout the motion apart from electric force particle also experiences a dissipatice force of constant magnitude qE_(0) and directed opposite to its velocity. If |vecV_(0)|=6m//s , then find its speed when it has turned through an angle of 90^(@) .

A positively charged particle moving due east enters a region of uniform magnetic field directed vertically upwards. The partical will be

A proton of mass m and charge q enters a region of uniform magnetic field of a magnitude B with a velocity v directed perpendicular to the magnetic field. It moves in a circular path and leaves the magnetic field after completing a quarter of a circle. The time spent by the proton inside the magnetic field is proportional to:

A charge particle of mass m and charge q enters in a region of uniform magnetic field as shown in figure.The magnitude of change in linear momentum due to magnetic field will be

A charged particle enters into a uniform magnetic field with velocity v_(0) perpendicular to it , the length of magnetic field is x=sqrt(3)/(2)R , where R is the radius of the circular path of the particle in the field .The magnitude of charge in velocity of the particle when it comes out of the field is

A charged particle of mass m and charge q is projected into a uniform magnetic field of induciton vecB with speed v which is perpendicular to vecB . The width of the magnetic field is d. The impulse imparted to the particle by the field is (dlt lt mv//qB)

A proton with velocity vecv enters a region of uniform magnetic induction vecB , with vecv perpendicular to vecB and describes a circle of radius R. If an alpha - particle enters this region with the same velocity vecv , it describes a circle of radius

A charged particle of mass m and charge q is accelerated through a potential differences of V volts. It enters of uniform magnetic field B which is directed perpendicular to the direction of motion of the particle. The particle will move on a circular path of radius

A charged particle q enters a region of uniform magnetic field B (out of page) and is deflected distance d after travelling a horizontal distance a. The magnitude of the momentum of the particle is

RESONANCE ENGLISH-ELECTRODYNAMICS-Exercise-3 PART-2
  1. A long solenoid has 200 turns per cm and carries a current i. The magn...

    Text Solution

    |

  2. Figure shows a long straight wire of a circular cross-section (radius ...

    Text Solution

    |

  3. A current i flows along the length of an infinitely long, straight, th...

    Text Solution

    |

  4. A charged particle with charge q enters a region of constant, uniform ...

    Text Solution

    |

  5. A charged particle moves through a magnetic field perpendicular to its...

    Text Solution

    |

  6. Two identical long conductin wires AOB and COD are placed at right ang...

    Text Solution

    |

  7. Relative permittivity and permeability of a material are epsi(r) and m...

    Text Solution

    |

  8. A horizontal overhead powerline is at height of 4 m from the ground an...

    Text Solution

    |

  9. A current loop ABCD is held fixed on the plane of the paper as shown i...

    Text Solution

    |

  10. A current loop ABCD is held fixed on the plane of the paper as shown i...

    Text Solution

    |

  11. Two long parallel wires are at a distance 2d apart. They carry steady ...

    Text Solution

    |

  12. A current I flows an infinitely long wire with cross section in the fo...

    Text Solution

    |

  13. An electric charge +q +q moves with velocity vecv = 3hati + 4hatj + ha...

    Text Solution

    |

  14. A thin circular disk of radius R is uniformly charged with density sig...

    Text Solution

    |

  15. A charge Q is uniformly distributed over the surgace of non conducting...

    Text Solution

    |

  16. Two short bar magnets of length 1 cm each have magnetic moments 1.20 A...

    Text Solution

    |

  17. A conductor lies along the z-axis at -1.5 le z le 1.5 m and carries...

    Text Solution

    |

  18. Two coaxial solenoids of different radii carry current I in the same ...

    Text Solution

    |

  19. Two long current carrying thin wires, both with current I, are held by...

    Text Solution

    |

  20. If there is uniform magnetic field of in the positive z direction , i...

    Text Solution

    |