Home
Class 12
PHYSICS
A charge of 10 e.s.u. is palced at a dis...

A charge of `10` e.s.u. is palced at a distance of `2 cm` from a charge of `40` e.s.u and `4 cm` from another charge of `20` e.s.u. The potential energy of the charge `10` e.s.u. is (in ergs)

A

`87.5`

B

`112.5`

C

`150`

D

`250`

Text Solution

Verified by Experts

The correct Answer is:
D
Energy `= (10 xx 40)/(2) + (10 xx 20)/(4) = 250 erg`
Promotional Banner

Topper's Solved these Questions

  • ELECTRIC POTENTIAL & CAPACITANCE

    A2Z|Exercise Euipotentials|45 Videos

  • ELECTRIC POTENTIAL & CAPACITANCE

    A2Z|Exercise Capacitor|32 Videos

  • ELECTRIC POTENTIAL & CAPACITANCE

    A2Z|Exercise Relation Between Electric Field And Potential|24 Videos

  • ELECTRIC CHARGE, FIELD & FLUX

    A2Z|Exercise Section D - Chapter End Test|29 Videos

  • ELECTROMAGNETIC INDUCTION

    A2Z|Exercise Section D - Chapter End Test|30 Videos

Similar Questions

Explore conceptually related problems

A charge 10 esu is placed at a distance of 2 cm from a charge 40 esu and 4 cm from another charge -20 esu. The potential energy of the charge 10 esu is : (in ergs)

Calculate the potenital energy of a nanocoulomb charge when placed at a distance of 10 cm from a microcoulomb charge.

Two charges +4e and +e are at a distance x apart. At what distance,a charge q must be placed from charge +e so that is in equilibrium

Two point charges +9e and +e are kept at a distance 'a' from each other. A third charge is placed at a distance 'x' from +9e on the line joining the above two charges. For the third charge to be in equilibrium 'x' is

When an electron fo mass 6 m and charge 6e moves with a velocity of 7u about the nuclar charge Ze in a circular orbit fo radius r . The potential energy of the electron will be:

A sphere of 4 cm radius is suspended within a hollow sphere of 6 cm radius. The inner sphere is charged to potential 3 e.s.u. and the outer sphere is earthed. The charge on the inner sphere is

Two charges +9e and +e are at a distance x a part.At what distance, a charge q must be placed from charge +e so that it is in equilibrium

The electric intensity due to a dipole of length 10 cm and having a charge of 500 muC , at a point on the axis at a distance 20 cm from one of the charges in air is

Figure shows a hemisphere of charge Q and radius R and a sphere of charge 2Q and radius R. The total potential energy of hemisphere is U_(H) and that of the sphere is U_(s) Then.

A2Z-ELECTRIC POTENTIAL & CAPACITANCE-Electric Potential Energy
  1. If E is the electric field intensity of an electrostatic field, then t...

    Text Solution

    |

  2. A sphere of radius 1 cm has potential of 8000 V, then energy density n...

    Text Solution

    |

  3. Three particles, each having a charge of 10 mu C are placed at the con...

    Text Solution

    |

  4. An electric dipole when placed in a uniform electric field E will have...

    Text Solution

    |

  5. An electric dipole of moment p is placed in the positive of stable equ...

    Text Solution

    |

  6. An electric dipole when placed in a uniform electric field E will have...

    Text Solution

    |

  7. Two charges +3.2 xx 10^(-19) C and -3.2 xx 10^(-9) C kept 2.4 Å apart ...

    Text Solution

    |

  8. An electric dipole has the magnitude of its charge as q and its dipole...

    Text Solution

    |

  9. A molecule with a dipole moment p is placed in an electric field of st...

    Text Solution

    |

  10. Two equal charges q are placed at a distance of 2a and a third charge ...

    Text Solution

    |

  11. When one electron is taken towards the other electron, then the electr...

    Text Solution

    |

  12. A charge of 10 e.s.u. is palced at a distance of 2 cm from a charge of...

    Text Solution

    |

  13. If a positive charge is shifted from a low - potential region to a hig...

    Text Solution

    |

  14. When a negative charge is taken at a height from earth's surface, then...

    Text Solution

    |

  15. If 3 charges are placed at the vertices of equilateral triangle of cha...

    Text Solution

    |

  16. Three charges Q, (+q) and (+q) are placed at the vertices of an equila...

    Text Solution

    |

  17. The dimension of ((1)/(2))epsilon(0)E^(2) (epsilon(0) : permittivity o...

    Text Solution

    |

  18. What is the potential energy of the equal positive point charges of 1 ...

    Text Solution

    |

  19. Three charges Q, +q and +q are placed at the vertices of a right-angle...

    Text Solution

    |

  20. If identical charges (-q) are placed at each corner of a cube of side ...

    Text Solution

    |