Home
Class 12
PHYSICS
Two charged spherical conductors of radi...

Two charged spherical conductors of radii `R_(1) and R_(2)` are connected by a wire. Then the ratio of surface charge densitites of the spheres `sigma_(1)//sigma_(2)` is

A

`R_(1)/R_(2)`

B

`R_(2)/R_(1)`

C

`sqrt((R_(1))/(R_(2))`

D

`R_(1)^(2)/R_(2)^(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • ELECTRIC CHARGES AND FIELDS

    NEW JOYTHI PUBLICATION|Exercise Previous Year Questions|3 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    NEW JOYTHI PUBLICATION|Exercise COMPETITIVE EXAM CORNER|15 Videos

  • ELECTROMAGNETIC INDUCTION

    NEW JOYTHI PUBLICATION|Exercise COMPETITIVE EXAM CORNER|13 Videos

Similar Questions

Explore conceptually related problems

Two charge d spherical conditioners of radii R_(1)&R_(2) when connented by a conducting wire acquire charge q_(1)&q_(2) respectively. Find the ratio of surface charge densities in terms of their radii.

Two charged conducting spheres of radii a and b are connected to each other by a wire. What is the ratio of electric fields at the surfaces of the two spheres? Use the result obtained to explain why charge density on the sharp and pointed ends of a conductor is higher than on its flatter portions.

Knowledge Check

  • Two condensers (capacitors) of cpacity C_(1) and C_(2) are connected in parallel. A charge Q given to then is shared. The ratio of the changes Q is

    A
    `(C_(2))/(C_(1))`
    B
    `(C_(1))/(C_(2))`
    C
    `C_(1).C_(2)`
    D
    `(1)/(C_(1)xxC_(2))`

  • Assertion : Two surface of spheres A and B or radii r_(1) and r_(2) when connecrted by a wire, form an equipotential surface i.e., v_(A)=v_(B) Reason : Surface charge density (sigma) is inversely proportional to the radius of the sphere i.e., sxx(1)/(r) .[ as radius is smaller , sigma will be larger]

    A
    Assertion and Reason are correct and Reason is the correct explanation of Assertion.
    B
    Assertion and Reason are true but Reason is the false explanation of the Assertion.
    C
    Assertion is true but Reason is false.
    D
    Assertion is false but Reason is true.

  • Two isolated, charged coducting spheres of radii R_(1) and R_(2) produce the same electric field near their surfaces. The ratio of electric potentials on their surfaces is

    A
    `(R_(1))/(R_(2))`
    B
    `(R_(2))/(R_(1))`
    C
    `(R_(1)^(2))/(R_(2)^(2))`
    D
    `(R_(2)^(2))/(R_(2)^(1))`

    • Similar Questions

    Explore conceptually related problems

    Two concentric metallic spherical shell of radii R and 2R are given charges Q_(1) & Q_(2) respectively. The surface charge density on the outer surfaces of the shells are equal. Determine the ratio Q_(1)=Q_(2)

    A charge Q is distributed over two concentric hollow spheres of radii r and R (R gt r), so that the surface charge densities are equal. The potential at the common centre is (1)/(4pi epsi_(0))" times"

    Two cars having masses m_1 and m_2 move in circles of radii r_1 and r_2 respectively. If they complete the circle is equal time the ratio of their angular speeds is omega_1/omega_2 is

    Two conducting charged spheres x and y having unequal charges are connected by a wire. Which of the following is true ?

    The inner and outer radii of a spherical capacitor are r_1 and r_2 respectively. When the inner surface is earthed . The outer sphere is given a charge +Q , then the charge on the inner surface is

    Home
    Profile