Home
Class 12
PHYSICS
The capacitance of a metallic sphere wil...

The capacitance of a metallic sphere will be `1muF`, if its radius is nearly

A

9 km

B

10 m

C

1.11 m

D

1.11 cm

Text Solution

Verified by Experts

The correct Answer is:
A

Since, `C=4piepsilon_0R`
`implies R = C/(4pi epsilon_0)`
`=1 xx10^(-6)xx 9 xx10^9 = 9 xx10^3 m`
`=9km`
Promotional Banner

Topper's Solved these Questions

  • ELECTROSTATICS

    ERRORLESS|Exercise NCERT BASED QUESTIONS (Grouping of Capacitors)|58 Videos
  • ELECTROSTATICS

    ERRORLESS|Exercise PAST YEARS QUESTIONS|56 Videos
  • ELECTROSTATICS

    ERRORLESS|Exercise NCERT BASED QUESTIONS (Electric Flux and Gauss.s Law)|27 Videos
  • ELECTRONICS

    ERRORLESS|Exercise Assertion & Reason|26 Videos
  • MAGNETIC EFFECTS OF CURRENT

    ERRORLESS|Exercise ASSERTION & REASON |18 Videos

Similar Questions

Explore conceptually related problems

The capacitance of a metallic sphere is 1 muF , if its

How will the capacitance of a metal sphere change if its volume is doubled?

How will the capacitance of a metal sphere change if its volume is doubled?

The capacitance of an isolated conducting sphere of radius R is proportional to

" The capacitance of a sphere of radius "10cm" .situated in air is approximately "

The capacitance (C ) for an isolated conducting sphere of radius (a) is given by 4pi epsilon_(0)a . If the sphere is enclosed with an earthed concentric sphere. The ratio of the radii of the sphere being (n)/((n-1)) then the capacitance of such a sphere will be increased by a factor

The capacitance of a spherical condenser is 1 mu F . If the spacing between the two spheres is 1mm , then the radius of the outer sphere is

Find the capacitance of a system consisting of a metal sphere of radius a placed at a large distance from an identical metallic sphere. [Hint: When the distance is large the charges on the spheres may be assumed to be distributed practically uniformly over the surfaces of the spheres. Consider their potential difference and apply C=Q//V.

The capacitance of a parallel plate capacitor is 2.5muF when it is half filled with a dielectric as shown in the figure, Its capacitance becomes 5muF , the dielectric constant of the dielectric is

ERRORLESS-ELECTROSTATICS-NCERT BASED QUESTIONS (Capacitance)
  1. A capacitor of capacitance C(0) is charged to a potential V(0) and is ...

    Text Solution

    |

  2. A parallel plate capacitor has an electric field of 10^(5)V//m between...

    Text Solution

    |

  3. The capacitance of a metallic sphere will be 1muF, if its radius is ne...

    Text Solution

    |

  4. Two conducting spheres of radii r(1) and r(2) having charges Q(1) and ...

    Text Solution

    |

  5. A cylindrical capacitor has charge Q and length L. If both the charge ...

    Text Solution

    |

  6. Conducting sphere of radius R(1) is covered by concentric sphere of ra...

    Text Solution

    |

  7. Two spherical conductors A and B of radii a and b (b gt a) are placed ...

    Text Solution

    |

  8. A capacitor is charged by using a battery which is then disconnected. ...

    Text Solution

    |

  9. A parallel plate capacitor is charged and the charging battery is then...

    Text Solution

    |

  10. A system is shown in the figure. The time period for small oscillation...

    Text Solution

    |

  11. A parallel plate capacitor is charged by connecting it to a battery. T...

    Text Solution

    |

  12. An uncharged capacitor is connected to a battery. On charging the capa...

    Text Solution

    |

  13. In a parallel plate capacitor of capacitance C, a metal sheet is inser...

    Text Solution

    |

  14. In a capacitor of capacitance 20 muF,the distance between the plates i...

    Text Solution

    |

  15. A parallel plate capacitor has plate area A and separation d. It is ch...

    Text Solution

    |

  16. If n drops, each of capacitance C and charged to a potential V, coales...

    Text Solution

    |

  17. A spherical drop of capacitance 1 muF is broken into eight drop of equ...

    Text Solution

    |

  18. Sixty four identical sphere of change q and capacitance C each are com...

    Text Solution

    |

  19. A parallel plate capacitor is connected to a battery. The plates are p...

    Text Solution

    |

  20. A capacitor of 4 mu F is connected as shown in the circuit. The intern...

    Text Solution

    |