Home
Class 12
PHYSICS
Two spheres A and B of radius a and b re...

Two spheres A and B of radius a and b respectively are at same electric potential. The ratio of the surface charge densities of A and B is

A

`a//b`

B

`b//a`

C

`a^(2)//b^(2)`

D

`b^(2)//a^(2)`

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

Two spheres of radius a and b respectively are charged and joined by a wire. The ratio of electric field of the spheres is

Two conducting concentric, hollow spheres A and B have radii a and b respectively, with A inside B. Their common potentials is V. A is now given some charge such that its potential becomes zero. The potential of B will now be

Two metal spheres A and B of radii a & b (a lt b) respectively are at a large distance apart. Each sphere carries a charge of 100 mu O. the sphere are connected by a conducting wire, then

Two isolated charged conducting spheres of radii a and b produce the same electric field near their surface. The ratio of electric potentials on their surfaces is

Two spheres of radii R_(1) and R_(1) respectively are charged and joined by wire. The ratio of electric field of spheres is

A number of spherical conductors of different radius have same potential. Then the surface charge density on them.

Two spherical conductors A and B of radii R and 2R respectively , are separated by a large distance . If some charge is given to both the spheres and later they are connected by a conducting wire , then in equilibrium condition , the ratio of the magnitude of the electric fields at the surface of spheres A and B is

Two conducting spheres of radii R_(1) and R_(2) are at the same potential. The electric intensities on their surfaces are in the ratio of

A number of spherical conductors of different radii are charged to same potential. The surface charge density of each conductor is related with its radius as

(i) Two isolated metal spheres A and B have radii R and 2R respectively and same charge q. Find which of the two spheres have (a) greater capacitance (b) greater energy density just outside the surface of the spheres. (ii) (a) Show that the equipotential surfaces are closed together in the regions of strong field and far apart in the region of weak field. Draw equipotential surfaces for an electric dipole. (b) Concentric equipotential surfaces due to a charged body placed at the centre are shown. Identify the polarity of the charge and draw the electric field lines due to it.

ALLEN-TEST PAPER 2-PHYSICS
  1. The equation of projectile is y = 16 x - (5 x^2)/(4). Find the horizon...

    Text Solution

    |

  2. Calculate the resistance of two coils if their equivalent resistance i...

    Text Solution

    |

  3. Two spheres A and B of radius a and b respectively are at same electri...

    Text Solution

    |

  4. An electric dipole of moment p is placed normal to the lines of force ...

    Text Solution

    |

  5. There exists a uniform electric field between plates A and B. An elect...

    Text Solution

    |

  6. An electron is rotating around an infinite positive linear charge in a...

    Text Solution

    |

  7. A hollow metal sphere of radius 10 cm is charged such that the potenti...

    Text Solution

    |

  8. What is the angle between electric field and equipotential surface ?

    Text Solution

    |

  9. Thirteen resistors each of resistance R connected in the circuit as sh...

    Text Solution

    |

  10. The emf of the battery shown in figure is

    Text Solution

    |

  11. A piece of copper and another of germanium are cooled from room temper...

    Text Solution

    |

  12. The electron in hydrogen atom moves with a speed of 2.2xx10^(6)m//s in...

    Text Solution

    |

  13. The current in a wire varies with time according to the equation I = ...

    Text Solution

    |

  14. Calculate the resistance of a hollow cylindrical pipe of inner and out...

    Text Solution

    |

  15. The resistance of each side of an equilateral triangle is 6 ohm. Calcu...

    Text Solution

    |

  16. Find the effective resistance between points A and B for the network s...

    Text Solution

    |

  17. In the given figure when the key is open the ammeter reading is 5 amp....

    Text Solution

    |

  18. Four molecules of gas have speeds 1,2,3 and 4 km//s.The value of the r...

    Text Solution

    |

  19. At what temperature RMS velocity of O2 molecule will be one third of H...

    Text Solution

    |

  20. Figure shows graphs of pressure vs density for an ideal gas at two tem...

    Text Solution

    |