Home
Class 12
PHYSICS
Four electric charges +q, +q, -q and -q ...

Four electric charges `+q, +q, -q` and `-q` are placed at the corners of a square of side 2L (see figure). The electric potential at point `A`, mid-way between the two charges `+q` and `+q`, is

A

`(1)/(4pi epsilon_(0))(2q)/(L)(1+(1)/(sqrt(5)))`

B

`(1)/(4pi epsilon_(0))(2q)/(L)(1-(1)/(sqrt(5)))`

C

zero

D

`(1)/(4pi epsilon_(0))(2q)/(L)(1+sqrt(5))`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • ELECTROSTATIC POTENTIAL AND CAPACITORS

    DC PANDEY|Exercise (B) Chapter exercises|20 Videos

  • ELECTROSTATIC POTENTIAL AND CAPACITORS

    DC PANDEY|Exercise (C) Chapter exercises|50 Videos

  • ELECTROSTATIC POTENTIAL AND CAPACITORS

    DC PANDEY|Exercise Check point 2.5|20 Videos

  • ELECTROMAGNETIC WAVES

    DC PANDEY|Exercise Sec C|22 Videos

  • ELECTROSTATICS

    DC PANDEY|Exercise Medical entrances gallery|37 Videos

Similar Questions

Explore conceptually related problems

Four charges Q-Q, Q-Q are placed at the corners of a square as shown . The potential is zero at points

Electric charges -q -q -q and 3q are placed at the corners of a square ABCD of length 1 as shown in figure.The magnitude of electric dipole moment of the system is

Four point charges Q.q Q and q are placed at the corners of a square side 'a' as shown in the figures. Find the resultant electric force on a charge Q,

Four point charges Q.q Q and q are placed at the corners of a square side 'a' as shown in the figures. Find the Potential energy of this system.

Four charges +Q, -Q, +Q, -Q are placed at the corners of a square taken in order. At the centre of the square

Three charges, each equal to q, are placed at the three. corners of a square of side a . Find the electric field at. the fourth corner.

DC PANDEY-ELECTROSTATIC POTENTIAL AND CAPACITORS-(A) Chapter exercises
  1. A small sphere is charged to a potential of 50 V and a big hollow sphe...

    Text Solution

    |

  2. Two identical charges are placed at the two corners of an equilateral ...

    Text Solution

    |

  3. Four electric charges +q, +q, -q and -q are placed at the corners of a...

    Text Solution

    |

  4. A hollow metal sphere of radius 10cm is charged such that the potentia...

    Text Solution

    |

  5. A parallel plate condenser has a unifrom electric field E (V//m) in th...

    Text Solution

    |

  6. Charges 5 muC and 10 muC are placed 1 m apart. Work done to bring thes...

    Text Solution

    |

  7. A particle of mass 2 xx 10^(-3) kg, charge 4 xx 10^(-3)C enters in an ...

    Text Solution

    |

  8. The ionisation potential of mercury is 10.39 V. How far an electron mu...

    Text Solution

    |

  9. 0.2 F capacitor is charged to 600 V by a battery. On removing the batt...

    Text Solution

    |

  10. The work done in placing a charge of 8xx10^-18 coulomb on a condenser ...

    Text Solution

    |

  11. In a parallel plate capacitor, the separation between the plates is 3m...

    Text Solution

    |

  12. The electric potential at any point x,y an z in metres is given by V =...

    Text Solution

    |

  13. An electron of mass m and charge e is accelerated from rest through a ...

    Text Solution

    |

  14. If an electron moves from rest from a point at which potential is 50 v...

    Text Solution

    |

  15. The work done in bringing a 20 coulomb charge from point A to point B ...

    Text Solution

    |

  16. If 4 xx 10^(20)eV energy is required to move a charge of 0.25 coulomb ...

    Text Solution

    |

  17. Kinetic energy of an electron accelerated in a potential difference of...

    Text Solution

    |

  18. A hollow conducting sphere is placed in an electric field produced by ...

    Text Solution

    |

  19. Two unlike charges of magnitude q are separated by a distance 2d. The ...

    Text Solution

    |

  20. Two spheres A and B of radius 'a' and 'b' respectively are at same ele...

    Text Solution

    |