Home
Class 12
PHYSICS
Assertion: Two charges -q each are fixed...

Assertion: Two charges `-q` each are fixed points A and B. When a third chrge `-q` is moves from A to B, electrical potential energy first decreases than increases,

Reason: Along the line joining A and B, third charge is stable equilibrium position at centre.

A

If both Assertion and Reason are true but Reason is the correct explanation of Assertion.

B

If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.

C

If Assertion is true, but the Reason is false.

D

If Assertion is false but the Reason is true.

Text Solution

Verified by Experts

The correct Answer is:
A, B
At stable equililbrim position, potential energy is minimum.
Promotional Banner

Topper's Solved these Questions

  • ELECTROSTATICS

    DC PANDEY ENGLISH|Exercise Level 1 Objective|82 Videos

  • ELECTROSTATICS

    DC PANDEY ENGLISH|Exercise Level 1 Subjective|15 Videos

  • ELECTROSTATICS

    DC PANDEY ENGLISH|Exercise Exercise 24.7|2 Videos

  • ELECTROSTATIC POTENTIAL AND CAPACITORS

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

  • GRAVITATION

    DC PANDEY ENGLISH|Exercise All Questions|135 Videos

Similar Questions

Explore conceptually related problems

Two charges +Q each are fixed at points C and D. Line AB is the bisector line of CD. A third charge +q is moves from A to B, then from B to C

Two point charges q each are fixed at (a,0) and (-a,0). A third charge Q is placed at origin. Electrons potential energy of the system will

Assertion : There are two identical spherical bodies fixed in two positions as shows. While moving from A to B gravitational potential first increases then decreases. Reason : At centre point of A and B field strength will be zero.

Two equal charges q are placed at a distance of 2a and a third charge -2q is placed at the midpoint. The potential energy of the system is

Two charges -q each are separated by distance 2d . A third charge +q is kept at mid-point O. Find potential energy of +q as a function of small distance x from O due to -q charges. Prove that the charge at O is in an unstable equilibrium.

Two point charges 2q and 8q are placed at a distance r apart. Where should a third charge -q be placed between them so that the electrical potential energy of the system is a minimum

Draw E-r and V-r graphs due to two point charges + q and -2q kept at some along the line joining these two charges.

Assertion : When two positive point charges move away from each other, then their electrostatic potential energy decreases. Reason : Change in potential energy between two points is equal to the work done by electrostatic forces.

If identical charges (-q) are placed at each corner of a cube of side b , then electric potential energy of charge (+q) which is placed at centre of the cube will be

A two point charges 4q and -q are fixed on the x - axis x=-d/2 and x = d/2 , respectively. If a third point charge 'q' is taken from the origin to x = d along the semicircle as shown in the figure, the energy of the charge will

DC PANDEY ENGLISH-ELECTROSTATICS-Level 1 Assertion And Reason
  1. The electrical potential function for an electrical field directed par...

    Text Solution

    |

  2. The electric potential decreases uniformly from 100 V to 50 V as one m...

    Text Solution

    |

  3. In the uniform electric field shown in figure, find : a. VA-VD b....

    Text Solution

    |

  4. In figure (a), a charge q is placed just outside the centre of a close...

    Text Solution

    |

  5. Net charge within an imaginary cube drawn in a uniform electric field ...

    Text Solution

    |

  6. A hemispherical body of radius R is placed in a uniform electric field...

    Text Solution

    |

  7. A cube has sides of length L = 0.2 m. It is placed with one corner at ...

    Text Solution

    |

  8. Assertion: An independnt negative charge moves itself from point A to ...

    Text Solution

    |

  9. Assertion: When two unlike charges are brought nearer, their electrost...

    Text Solution

    |

  10. Assertion: At a point electric potential is decreasing along x-axis at...

    Text Solution

    |

  11. Assertion: Electric potential on the surface of a charged sphere of ra...

    Text Solution

    |

  12. Assertion: Gauss's theroem can be applied only for a closed surface. ...

    Text Solution

    |

  13. Assertion: In the electric field E=(4hati+4hatj)N//C electric potentia...

    Text Solution

    |

  14. Assertion: Two charges -q each are fixed points A and B. When a third ...

    Text Solution

    |

  15. Assertion: A small electric dipole is moved translatonally from higher...

    Text Solution

    |

  16. Assertion: In case of charged spherical shells, E-r graph is discontin...

    Text Solution

    |

  17. Assertion: If we see along the axis of a chaged ring, the magnitudeof ...

    Text Solution

    |

  18. Units of electric flux are

    Text Solution

    |

  19. A neutral pendulum oscillates in a uniform electric field as shown in ...

    Text Solution

    |