Home
Class 12
PHYSICS
ABC is an equilateral triangle. Charges ...

`ABC` is an equilateral triangle. Charges `+q` are placed at each corner. The electric intensity at `O` will be

A

`1/(4pi epsilon_0)q/r^2`

B

`1/(4pi epsilon_0)q/r`

C

Zero

D

`1/(4pi epsilon_0)((3q)/r^2)`

Text Solution

Verified by Experts

The correct Answer is:
C
`vecF_(A) + vecF_(B) + vecF_(C) =0`
Because of equal angles.
Promotional Banner

Topper's Solved these Questions

  • ELECTROSTATICS

    ERRORLESS|Exercise NCERT BASED QUESTIONS (Electric Dipole)|21 Videos

  • ELECTROSTATICS

    ERRORLESS|Exercise NCERT BASED QUESTIONS (Electric Flux and Gauss.s Law)|27 Videos

  • ELECTROSTATICS

    ERRORLESS|Exercise ASSERTION & REASON|25 Videos

  • ELECTRONICS

    ERRORLESS|Exercise Assertion & Reason|26 Videos

  • MAGNETIC EFFECTS OF CURRENT

    ERRORLESS|Exercise ASSERTION & REASON |18 Videos

Similar Questions

Explore conceptually related problems

ABC is an equilateral triangle. Charges -2q are placed at each corner. The electric intensity at O will be

ABC is equilateral triangle of side 1m. Charges are placed at its corners as shown in fig. O is the mid- point of side BC the potential at point (O) is-

Three charges each of value q are placed at the corners of an equilateral triangle. A fourth charge Q is placed at the centre of the triangle. If Q = -q :

Three charges, each of value q, are placed at the corners of an equilateral triangle. A fourth charge Q is placed at the centre O of the triangle. (a) If Q = -q , will the charges at corners starts to move towards centre of away from it. (b) For what value of Q at O will the charges remain stationary ?

Three charges each of value q are placed at the corners of an equilateral triangle. A fourth charge Q is placed at the center of the triangle. a. Find the net force on charge q. b. If Q = -q , will the charges at the corners move toward the center or fly away from it ? c. For what value of Q and O will the charges remain stationary ? d. In situation (c), how much work is done in removing the charges to infinity ?

The electric field at the centroid of an equilateral triangle carrying an equal charge q at each of the vertices is :

Three equal charges, each +q are placed on the corners of an equilatreal triangel . The electric field intensity at the centroid of the triangle is

At each corner of an equilateral triangle identical charges are placed. Then at the centre of the triangle

ERRORLESS-ELECTROSTATICS-NCERT BASED QUESTIONS (Electric Field and Potential)
  1. The electric field inside a spherical shell of uniform surface charge ...

    Text Solution

    |

  2. ABC is an equilateral triangle. Charges +q are placed at each corner. ...

    Text Solution

    |

  3. An uncharged sphere of metal is placed in between two charged plates a...

    Text Solution

    |

  4. Two parallel metal plates having charges +Q and -Q face each other at ...

    Text Solution

    |

  5. The number of electrons to be put on a spherical conductor of radius 0...

    Text Solution

    |

  6. The electric field at a distance (3R)/2 from the centre of a charged ...

    Text Solution

    |

  7. Two point charges of magnitude 4 muC and-4muC are kept at points (-2 c...

    Text Solution

    |

  8. A thin conducting ring of radius R is given a charge +Q, Fig. The ele...

    Text Solution

    |

  9. Three point charges of +2q,+2q and -4q are placed at the corners A, B ...

    Text Solution

    |

  10. Two point charges of 20 mu C and 80 muC are 10 cm apart where will the...

    Text Solution

    |

  11. Three identical points charges, as shown are placed at the vertices of...

    Text Solution

    |

  12. Two charges +5mu C and +10 mu C are placed 20 cm apart. The net electr...

    Text Solution

    |

  13. Which of the following is deflected by electric field

    Text Solution

    |

  14. Figures below show regular hexagons, with charges at the vertices. In ...

    Text Solution

    |

  15. An electron enters in an electric field with its velocity in the direc...

    Text Solution

    |

  16. If q is the charge per unit area on the surface of a conductor, then t...

    Text Solution

    |

  17. Two infinitely long parallel conducting plates having surface charge d...

    Text Solution

    |

  18. Three infinitely long charge sheets are placed as shown in figure. Th...

    Text Solution

    |

  19. An electron is accelerated in an electric field of 40V cm^(-1). If e//...

    Text Solution

    |

  20. A positively charge particle moving along x-axis with a certain veloci...

    Text Solution

    |