Home
Class 12
PHYSICS
A particle of charge q is placed at rest...

A particle of charge q is placed at rest in a uniform electric field E and then released . The kinetic energy attained by the particle after moving a distance y is

A

`q E^(2)`y

B

`q^(2)`Ey

C

`q Ey^(2)`

D

qEy

Text Solution

Verified by Experts

Force on the particle = qE
KE = Workdone by the force = F.y = qEy
Promotional Banner

Topper's Solved these Questions

  • ELECTROSTATICS

    FULL MARKS|Exercise ADDITIONAL QUESTIONS SOLVED ( II. FILL IN THE BLANKS)|34 Videos

  • ELECTROSTATICS

    FULL MARKS|Exercise ADDITIONAL QUESTIONS SOLVED ( III. MATCH THE FOLLOWING :)|4 Videos

  • ELECTROSTATICS

    FULL MARKS|Exercise EXERCISES|15 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    FULL MARKS|Exercise ADDITIONAL QUESTIONS -( ADDITIONAL NUMERICAL PROBLEMS : )|10 Videos

  • MAGNETISM AND MAGNETIC EFFECTS OF ELECTRIC CURRENT

    FULL MARKS|Exercise ADDITIONAL QUESTIONS SOLVED - NUMERICAL PROBLEMS :|4 Videos

Similar Questions

Explore conceptually related problems

An electron of mass m and charge q is accelerated from rest in a uniform electric field of strength E. The velocity acquired by it as it travels a distance l is …..

When a charged particle enters a uniform magnetic field its kinetic energy

Explain the Motion of a charged particle in a uniform magnetic field.

A moving charge is subjected to an external magnetic field. The change in the kinetic energy of the particle

A particle of mass m and charge (-q) enters the region between the two charged plates initrally moving along X-axis with speed V_(x) as shown in figure. The length of plate is L and an uniform electric field E is maintained between the plates. S.T. vertical deflection of the particle at the edge of the plate is (qEL^(2))/(2mV_(x)^(2)) .

A particle of mass m and charge enters the region between the two charged plates initally moving along x axis with speed v_(x) the length of plate is l and an uniform electric field E is maintained between the plates. Show that the vertical deflection of the particle at the far edge of the plate is qEL^(2)//2mv_(x)^(2) compare this motion with motion of a projectile in gravitational field

An electric dipole of moment p is placed in a uniform electric field E. Then (i) the torque on the dipole is p xx E , (ii) the potential energy of the system is p.E, (iii) the resultant force on the dipole is zero

A particle of mass m, charge Q and kinetic energy T enters a transverse uniform magnetic , field of induction vecB . After 3 seconds the kinetic energy of the particle will be:

FULL MARKS-ELECTROSTATICS -ADDITIONAL QUESTIONS SOLVED ( Multiple choice questions : )
  1. A point Q lies on the perpendicular bisector of an electric dipole of ...

    Text Solution

    |

  2. A hollow insulated conducting sphere is given a positive charge of 10 ...

    Text Solution

    |

  3. A particle of charge q is placed at rest in a uniform electric field E...

    Text Solution

    |

  4. Dielectric constant of metals is

    Text Solution

    |

  5. When a positively charged conductor is earth connected

    Text Solution

    |

  6. The SI unit of electric flux is

    Text Solution

    |

  7. Twenty seven water drops of the same size are charged to the same pote...

    Text Solution

    |

  8. A point charge +q is placed at the midpoint of a cube of side l. the e...

    Text Solution

    |

  9. Energy of a capacitor of capacitance C, when subjected to a pontential...

    Text Solution

    |

  10. The electric potential at the centre of a charged conductor is

    Text Solution

    |

  11. The energy stored in a capacitor is given by

    Text Solution

    |

  12. The unit of permitivity of free space epsilon(0) is

    Text Solution

    |

  13. An electric dipole has the magnitude of its charge as q and its dipole...

    Text Solution

    |

  14. An electric dipole of moment p is lying along a uniform electric field...

    Text Solution

    |

  15. A parallel plate capacitor is charged to a potential difference of V v...

    Text Solution

    |

  16. When air is replaced by a dielectric medium of constant K, the maximum...

    Text Solution

    |

  17. When a comb rubbed with dry hair attracts pieces of paper. This is bec...

    Text Solution

    |

  18. Which of the following is not a property of equipotential surfaces ?

    Text Solution

    |

  19. A charge Q is enclosed by a Gaussian spherical surface of radius R. if...

    Text Solution

    |

  20. If the electric field in a region is given by vec(E) = 5 hat(i) + 4 ha...

    Text Solution

    |