Home
Class 12
PHYSICS
A metal sphere A of radius R has a charg...

A metal sphere A of radius R has a charge of Q on it .The field at a point B outside the sphere is E. Now another sphere of radius R having a charge -3Q is placed at point B. The total field at a point mid-way between A and B due to both sphere is-

A

`4E`

B

`8E`

C

`12E`

D

`16E`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION

    MOTION|Exercise EXERCISE-4 (LEVEL-II)|13 Videos

  • ELECTRONICS - SEMI CONDUCTOR

    MOTION|Exercise EXERCISE - 3|29 Videos

Similar Questions

Explore conceptually related problems

Metallic sphere of radius R is charged to potential V. Then charge q is proportional to

Potential at a point x-distance from the centre inside the conducting sphere of radius R and charged with charge Q is

A hallow metal sphere of radius R is uniformly charged. The electric field due to the sphere at a distance r from the centre:

Find the energy stored in the electirc field produced by a metal sphere of radius R containing a charge Q.

A metallic sphere of radius R having charge Q is connected to an uncharged sphere of radius 3R . The amount of charge flown through connecting wire is

A solid insulating sphere of radius R is given a charge Q. If at a point inside the sphere the potential is 1.5 times the potential at the surface, this point will be

Electric field intensity due to a charged sphere at a point outside the sphere decreases with "……………….." .

MOTION-ELECTROMAGNETISM-Exercise
  1. A hemisphere (radius R) is placed in electric field as shown in fig. T...

    Text Solution

    |

  2. Two small balls having equal poistive charges Q( coulomb) on each are ...

    Text Solution

    |

  3. A metal sphere A of radius R has a charge of Q on it .The field at a ...

    Text Solution

    |

  4. semicircle of radius R. The electric field at the centre is -

    Text Solution

    |

  5. The potential of a charged drop is v. This is divided into n smaller ...

    Text Solution

    |

  6. When an electric dipole P vecv is placed in a uniform electric field v...

    Text Solution

    |

  7. An electric dipole is placed along the x-axis at the origin O.A point ...

    Text Solution

    |

  8. Two charged metal spheres of radii R and 2R are temporarily placed in...

    Text Solution

    |

  9. Two parallel plate air filled capacitors each of capacitance C, are jo...

    Text Solution

    |

  10. A capacitor when filled with a dielectric K = 3 has charge Q(0), volta...

    Text Solution

    |

  11. Four condenser are joined as shown in the adjoining figure. The capac...

    Text Solution

    |

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

    Text Solution

    |

  13. Four metallic plates each with a surface area A of one side and placed...

    Text Solution

    |

  14. Two identical parallel plate air capacitors are connected in series to...

    Text Solution

    |

  15. A number of capacitors each of capacitance 1 muF and each one of whic...

    Text Solution

    |

  16. In the given circuit C1 = C, C2 = 2C, C3 = 3C. If charge at the capaci...

    Text Solution

    |

  17. A capacitor of 2 muF is charged to its maximum emf of 2V and is discha...

    Text Solution

    |

  18. A battery charges a parallel plate capacitor of thickness (d) so that ...

    Text Solution

    |

  19. Two spheres of radii R1 and R2 have equal charge are joint together w...

    Text Solution

    |

  20. Calculate the reading of voltmeter between X and Y then (V(x)-V(y)) is...

    Text Solution

    |