Home
Class 12
PHYSICS
A wire is bent in the form of a regular ...

A wire is bent in the form of a regular hexagon and a total charge q is distributed uniformly on it. What is the electric field at the centre? You may answer this part without making any numerical calculations.

Text Solution

Verified by Experts

Since it is a regular hexagon. So, it forms
an equipotential surface. Hence the charge at each point is equal . Hence the net electric field at the centre is 0.
Promotional Banner

Topper's Solved these Questions

  • ELECTRIC FIELD AND POTENTIAL

    HC VERMA|Exercise Objective 2|8 Videos
  • ELECTRIC CURRENT THROUGH GASES

    HC VERMA|Exercise Exercise|23 Videos
  • ELECTROMAGNETIC INDUCTION

    HC VERMA|Exercise EXERCISE|98 Videos

Similar Questions

Explore conceptually related problems

A ring of radius a contains a charge q distributed. uniformly ober its length. Find the electric field at a point. on the axis of the ring at a distance x from the centre.

A spherical shell made of plastic, contains a charge Q distributed uniformly over its surface. What is the electric field inside the shell? If the shell is hammered to deshape it without altering the charge. Will the field inside be changed? What happend if the shell is made of a metal?

A circular wire-loop of radius a carries a total charge Q distributed uniformly over its length . A small length dL of the wire is cut off. Find the electric field at the centre due to remaining wire.

A wire of length l is bent in the form of an equilateral triangle and carries an electric current i. (a) Find the magnetic field B at the centre. (b) If the wire is bent in the form of a square, what would be the value of B at the centre?

A rod of length L has a total charge Q distributed uniformly along its length. It is bent in the shape of a semicircle. Find the magnitude of the electric field at the centre of curvature of the semicircle.

A spherical conductor of radius 0.12 m has a charge of 1.6 xx 10^-7C distributed uniformaly on its surface. What is the electric field (i) Inade the sphere (ii) on the sphere (iii) at a point 0.18 m from the centre of the sphere?

A spherical coductor of radius 12cm has a charge of 1.6 xx 10^(-7)C distributed uniformly on its surface. What is the electric field (a) inside (b) just outside the sphere (c), at a point 18cm from the centre of the sphere ?

consider a nonconducting ring of radius r and mass m which has a total charge q distributed uniformly on it the ring is rotated about its axis with an angular speed omega . (a) Find the equivalent electric current in the ring (b) find the magnetic moment mu of the . (c) show that mu=(q)/(2m) where l is the angular momentum of the ring about its axis of rotation.

Four particles each having a charge q, are placed on the four vertices of a regular pentagon. The distance of each corner from the centre is a. Find the electric field at the centre of the pentagon.

A charge Q is uniformly distributed on a thin spherical shell. What is the field at the centre of the shell? If a point charge is brought close to the shell, will the field at the centre change? Does your answer depend on whether the shell is conducting or nonconducting?

HC VERMA-ELECTRIC FIELD AND POTENTIAL-Exercises
  1. A 10 cm long rod carries a charge of +50 muC distributed uniformly al...

    Text Solution

    |

  2. Find the point on the X-axis which is equidistant from (2, -5) and (-2...

    Text Solution

    |

  3. A wire is bent in the form of a regular hexagon and a total charge q i...

    Text Solution

    |

  4. A circular wire-loop of radius a carries a total charge Q distributed ...

    Text Solution

    |

  5. A positive charge q is placed in front of conducting solid cube at a d...

    Text Solution

    |

  6. A pendulum bob of mass 80mg and carrying a charge of 2xx 10^(-8)C is a...

    Text Solution

    |

  7. A particle of mass m and charge q is thrown at a speed u against a uni...

    Text Solution

    |

  8. A particle of mass 1 g and charge 2. 5 xx10^(-4) C is released from re...

    Text Solution

    |

  9. A ball of mass 100g and having a charge of 4.9xx 10^(-5) C is released...

    Text Solution

    |

  10. The bob of a simple pendulum has a mass of 40 g and a positive char...

    Text Solution

    |

  11. A block of mass m having a charge q is placed on a smooth horizontal t...

    Text Solution

    |

  12. A block of mass m containing a net positive charge q is placed on a sm...

    Text Solution

    |

  13. A Uniform electric field of 10NC ^(-1) exists in the vertically downwa...

    Text Solution

    |

  14. 12 j of work has to be done against an existion electric field to take...

    Text Solution

    |

  15. Two equal charges, 2.0xx10^(-7) C each, are held fixed at a separation...

    Text Solution

    |

  16. An electric field of 20 N//C exists along the x-axis in space. Calcula...

    Text Solution

    |

  17. Consider the situation of the previous problem. A charge of 2.0xx 10 ^...

    Text Solution

    |

  18. An electric field vecE = (20i + 30j) NC^(-1) exists in the space. If t...

    Text Solution

    |

  19. An electric field vecE = vec I Ax exists in the space, where A= 10 V ...

    Text Solution

    |

  20. The electric potential existing in space is V(x,y,z)= A (xy+ yz+zx).(a...

    Text Solution

    |