Home
Class 12
PHYSICS
Four point charges -Q, -q, 2q and 2Q are...

Four point charges `-Q, -q, 2q` and `2Q` are placed, one at each corner of the square. The relation between `Q` and `q` for which the potential at the centre of the square is zero is

A

`Q = -q`

B

`Q = (1)/(q)`

C

`Q = q`

D

`Q = (1)/(q)`

Text Solution

Verified by Experts

The correct Answer is:
A
`V = (1)/(4 pi in_(0)) sum (q)/(r) = 0`
Promotional Banner

Topper's Solved these Questions

  • ELECTROSTATIC POTENTIAL AND CAPACITANCE

    NARAYNA|Exercise EXERCISE - 4 (NCERT EXAMPLAR PROBLEMS)|6 Videos

  • ELECTROSTATIC POTENTIAL AND CAPACITANCE

    NARAYNA|Exercise ADDITIONAL PROBLEMS|14 Videos

  • ELECTROSTATIC POTENTIAL AND CAPACITANCE

    NARAYNA|Exercise EXERCISE -2 (H.W)|50 Videos

  • ELECTROMAGNETIC WAVES

    NARAYNA|Exercise EXERCISE -4|15 Videos

  • ELECTROSTATICS AND GAUSS LAW

    NARAYNA|Exercise Intergers type question|11 Videos

Similar Questions

Explore conceptually related problems

Four point charges q_(1),q_(2),q_(3)" and " q_(4) are placed at the corners of the squares of side a,as shown in figure.Calculate the potential at the centre of the square. (Given, q_(1)=1xx10^(-8)C,q_(2)= -2xx10^(-8)C,q_(3)=3xx10^(-8)C,q_(4)=2xx10^(-8)C" and " a=1m )

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

Two point charges +Q each are placed at adjacent corners of a square. Other two point charges -Q each are placed at the remaining two corners of the same square . The side of the square is l. Find electric field intensity at the centre of the square.

Four charge Q, q, Q and q are kept at the four corners of a square as shown below. What is the relation between Q and q, so that the net force on a charge q is zero ?

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.

Charges q, 2q,3q and 4q are placed at the corners A,B,C and D of a square as shown in the following figure. The directon of electric field at the centre of the square is along

NARAYNA-ELECTROSTATIC POTENTIAL AND CAPACITANCE-EXERCISE - 3 (PREVIOUS AIPMT QUESTIONS)
  1. The electric potential at a point in free space due to a charge Q coul...

    Text Solution

    |

  2. The energy required to charge a parallel plate condenser of plate sepa...

    Text Solution

    |

  3. Three concentric spherical shells have radii a, b and c(a lt b lt c) a...

    Text Solution

    |

  4. Three capacitors each of capacitance C and of breakdown voltage V are ...

    Text Solution

    |

  5. The electirc potential at a point (x, y, z) is given by V = -x^(2)y ...

    Text Solution

    |

  6. A series combination of n(1) capacitors, each of value C(1), is charge...

    Text Solution

    |

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

    Text Solution

    |

  8. Four electric charges +q , +q , -q , are placed at the corners of a sq...

    Text Solution

    |

  9. Three charges , each + q are placed at the corners of an isosceles tri...

    Text Solution

    |

  10. An electric dipole moment p is placed in an electric field of intensit...

    Text Solution

    |

  11. Four point charges -Q, -q, 2q and 2Q are placed, one at each corner of...

    Text Solution

    |

  12. Two metallic spheres of radii 1 cm and 3 cm are given charges of -1 x...

    Text Solution

    |

  13. Two thin dielectric slabs of dielectric constants K(1) and K(2) (K(1) ...

    Text Solution

    |

  14. A conducting sphere of radius R is given a charge Q. The electric pote...

    Text Solution

    |

  15. In a region, the potential is represented by V(x, y, z) = 6x - 8xy - 8...

    Text Solution

    |

  16. A parallel plate air capacitor of capacitance C is connected to a cell...

    Text Solution

    |

  17. A parallel plate air capacitor has capcity C distance of separtion bet...

    Text Solution

    |

  18. If potential (in volts) in a region is expressed as V(x, y, z) = 6xy -...

    Text Solution

    |

  19. A capacitor of 2 mu F is charged as shown in the diagram . When the s...

    Text Solution

    |

  20. A parallel plate capacitor of area A , plate separation d and capacita...

    Text Solution

    |