Home
Class 12
PHYSICS
A cube of side b has a charge q at each ...

A cube of side b has a charge q at each of its vertices. The electric field due to this charge distribution at the centre of the cube is

A

`(q)/(b^(2))`

B

`(q)/(2b^(2))`

C

`(32q)/(b^(2))`

D

zero

Text Solution

Verified by Experts

There is an equal charge at diagonally opposite corner. The fields due these at the centre cancel out. Therefore, the net field at the centre is zero.
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

A regular hexagon of side 10cm has a charge 5muC at each of its vertices. Calculation the potential at the centre of the hexagon.

A thin conducting ring of radius R is given a change +Q . The electric field at the centre O of the ring due to the charge on the part AKB of the ring is E. The electric field at the centre due to the charge on the part ACDB of the ring is:

Obtain the expression for electric field due to an charged infinite plane sheet .

Obtain the value of electric field due to a system of charges.

The electric field due to a dipole at a distnce r from its centre is proportional to

A charge Q is placed at the centre of an imaginary hemispherical surface. Using symmetry arguments and the Gauss's law, find the flux of the electric field due to this charge through the surface of the hemisphere (figure ).

How do we determine the electric field due to a continuous charge distribution ? Explain. Electric field due to continous charge distribution

A charge Q is placed the the corner of a cube. The electric flux through the six faces of the cube is

FULL MARKS-ELECTROSTATICS -ADDITIONAL QUESTIONS SOLVED ( Multiple choice questions : )
  1. The capacitance of a parallel plate capacitor does not depend on

    Text Solution

    |

  2. A capacitor of 50 muF is charged to 10 volts. Its energy in joules is

    Text Solution

    |

  3. A cube of side b has a charge q at each of its vertices. The electric ...

    Text Solution

    |

  4. Total electric fulx coming out of a unit positive charge put in air is

    Text Solution

    |

  5. Electron volt (eV) is a unit of

    Text Solution

    |

  6. A point Q lies on the perpendicular bisector of an electric dipole of ...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  9. Dielectric constant of metals is

    Text Solution

    |

  10. When a positively charged conductor is earth connected

    Text Solution

    |

  11. The SI unit of electric flux is

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  16. The energy stored in a capacitor is given by

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |