Home
Class 12
PHYSICS
Two opposite and equal chrages 4 xx 10^(...

Two opposite and equal chrages `4 xx 10^(-8)` coulomb when placed `2 xx 10^(-2) cm` away, from a dipole. If dipole is placed in an external electric field `4 xx 10^(8)` newton/coulomb, the value of maximum torque and the work done in rotating it through `180^(@)` will be

A

`64 xx 10^(-4) Nm and 64 xx 10^(-4) J`

B

`32 xx 10^(-3)Nm and 32 xx 10^(-4) J`

C

`64 xx 10 ^(-4) Nm and 32 xx 10^(-4) J`

D

`32 xx 10^(-4) Nm and 64 xx 10^4 J`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • APPENDICES ( REVISION EXERCISE )

    AAKASH SERIES|Exercise REVISION EXERCISE (CUTTENT ELECTRICITY )|108 Videos

  • APPENDICES ( REVISION EXERCISE )

    AAKASH SERIES|Exercise REVISION EXERCISE (MOVING CHANGES & MEGNETISM)|95 Videos

  • APPENDICES ( REVISION EXERCISE )

    AAKASH SERIES|Exercise REVISION EXERCISE (MAGNETISM AND MATTER )|52 Videos

  • ALTERNATING CURRENT

    AAKASH SERIES|Exercise EXERCISE - III|24 Videos

  • APPENDICES (REVISION EXERCISE)

    AAKASH SERIES|Exercise LAW OF MOTION|128 Videos

Similar Questions

Explore conceptually related problems

An electric dipole consists of two opposite charges each of magnitude 1 mC separated by 2 cm. The dipole is placed in an external uniform field of 10^5 NC^-1 intensity. Find the a. maximum torque exterted by the field on the dipole, and b. work done in roating the dipole through 180^(@) starting from the position theta = 0^(@) .

Two charges +3.2 xx 10^(-19)C and -3.2 xx 10^(-19)C placed at 2.4A^(@) apart form an electric dipole. It is placed in a uniform electric field of intensity 4 xx 10^(5) volt/m. The electric dipole- moment is

An electric dipole of dipole moment p = 5 xx 10^(-18)C - m lying along unifrom electric field E = 4 xx 10^(4) NC^(-1) . Calculate the work done is rotating the dipole by 60^(@) .

Two point charges of 3.2 xx 10^-19 C and -3.2 xx 10^-19 C are separated from each other by 2.4 xx 10^-10 m . The dipole is situated in a uniform electric field of intensity 4 xx 10^5 Vm^-1 . Calculate the work done in roating the dipole by 180^(@) .

An electric dipole consisting of two opposite charges of 2xx10^(-6)C each separated by a distance of 3 cm is placed in an electirc field of 2xx10^(5)N//C . The maximum torque on the dipole is will be

A magnet of moment 4Am^(2) is kept suspended in a magnetic field of induction 5xx10^(-5)T . The workdone in rotating it through 180^(@) is

An electric dipole consists of two opposite charges each of magnitude 2 muC separated by a distance 1 cm. The dipole is placed in an external field of 10^(3) N/C. The maximum torque on the dipole is

The interplaner distance in a crystal is 2.8 xx 10^(–8) m. The value of maximum wavelength which can be diffracted : -

An electric dipole consists of two opposite charges of magnitude 1//3xx10^(-7)C , separated by 2 cm. The dipole is placed in an external field of 3xx10^(7) NC^(-1) . What maximum torque does the electrc field exert on the dipole ?

Two point-charges +2e and -2 e are situated at a distance of 2.4 Å from each other and constitude an electric dipole. This dipole is placed in a uniform electric field of 4.0 xx 10^(5) "Vm"^(-1) . Calculate (i) electric dipole moment, (ii) potential energy of the dipole in equilibrium position, (iii) work done in rotating the dipole through 180^(@) from the equilibrium position.

AAKASH SERIES-APPENDICES ( REVISION EXERCISE )-REVISION EXERCISE (ELECTRIC POTENTIAL & CAPACITANCE )
  1. Two charges 2 nano coulombs and -6 nano coulombs are separated by 16 c...

    Text Solution

    |

  2. Two electric charges of 9mu C and - 3mu c are placed 0.16 m apart in a...

    Text Solution

    |

  3. Two opposite and equal chrages 4 xx 10^(-8) coulomb when placed 2 xx 1...

    Text Solution

    |

  4. The potential at a point due to an electri dipole wlll be maximum and ...

    Text Solution

    |

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

    Text Solution

    |

  6. Charge Q is uniformly distributed on a dielectric rod AB of length 2l....

    Text Solution

    |

  7. Find the V(ab) in an electric field E=(2hati+3hatj+4hatk)N/C, where ra...

    Text Solution

    |

  8. If V(o) be the potential at origin in an electric field vecE=E(x)hati+...

    Text Solution

    |

  9. Electric potential is given by V=6x-8xy^(2)-8y+6yz-4z^(2) Then ele...

    Text Solution

    |

  10. An electric field is given by E=(y hat(i)+ xhat(k))N//C. Work done in ...

    Text Solution

    |

  11. A field of 100Vm^(-1) is directed at 30° to positive x-axis. Find (VA...

    Text Solution

    |

  12. (Figure 3.141) shows two equipotential lines in the x plane for an ele...

    Text Solution

    |

  13. Two metal spheres have their surface areas in the ratio 9:16. They are...

    Text Solution

    |

  14. Two isolated metallic solid spheres of radii R and 2R are charged suc...

    Text Solution

    |

  15. A hollow charged metal sphere has radius r. If the potential differenc...

    Text Solution

    |

  16. The electric potential on the surface of a sphere of radius R and char...

    Text Solution

    |

  17. A metal sphere A of radius a is charged to potential V. What will be i...

    Text Solution

    |

  18. A solid conducting sphere, having a charge Q, is surrounded by an unch...

    Text Solution

    |

  19. Two concentric spherical conducting shells of radii R and 2R are carry...

    Text Solution

    |

  20. A thibn spherical conducting shell of radius R has a charge q. Another...

    Text Solution

    |