Home
Class 12
PHYSICS
A positive charge q is placed in a spher...

A positive charge q is placed in a spherical cavity made in a positively charged sphere. The centres of sphere and cavity are displaced by a small distance `vec(l)`. Force on charge q is :

A

in the direction parallel to vector `vec(I)` .

B

in radial direction with respect to centre of cavity

C

in a direction which depends on the magnitude of charge density in sphere

D

direction cannot be determined

Text Solution

Verified by Experts

The correct Answer is:
A

Since field inside the cavity is parallel to`overline l`. So force on charge q will be parallel to `overline l`.
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • ELECTROSTATICS

    VMC MODULES ENGLISH|Exercise LEVEL - 2|60 Videos

  • ELECTROSTATICS

    VMC MODULES ENGLISH|Exercise JEE MAIN|65 Videos

  • ELECTROSTATICS

    VMC MODULES ENGLISH|Exercise LEVEL - 0 (LONG ANSWER TYPE )|8 Videos

  • ELECTROMAGNETIC INDUCTION & ALTERNATIVE CURRENT

    VMC MODULES ENGLISH|Exercise IMPECCABLE|52 Videos

  • ENERGY & MOMENTUM

    VMC MODULES ENGLISH|Exercise JEE ADVANCE (ARCHIVE) - TRUE/FALSE TYPE|1 Videos

Similar Questions

Explore conceptually related problems

A cavity of radius r is made inside a solid sphere. The volume charge density of the remaining sphere is rho . An electron (charge e, mass m) is released inside the cavity from point P as shown in figure. The centre of sphere and center of cavity are separated by a distance a. The time after which the electron again touches the sphere is

A positive point charge q is brought near a neutral metal sphere.

A thin fixed ring of radius 'R' and positive charge 'Q' is placed in a vertical plane. A particle of mass 'm' and negative charge 'q' is placed at the centre of ring. If the particle is given a small horizontal displacement, show that it executes SHM. Also find the time period of small oscillations of this particle, about the centre of ring. (Ignore gravity)

A conducting sphere of radius b has a spherical cavity with its centre displaced by 'a' from centre of sphere O_(1) . A point charged q is placed at the centre of cavity O_(2) . Q charge is given to conducting sphere and charge q_(0) is placed at P, a distance c from centre O_(1) . Further O_(1), O_(2) and P are collinear

A point charge q_1 is placed inside cavity 1 and another point charge q_2 is inside cavity 2. A point charge q is placed outside the conductor. For the situation described above, answer the following questions. If charge q_2 is at point Q (inside cavity 2), then vecE at the center of cavity 2 due to induced charge on the surface of cavity 2 would be

A point charge q_1 is placed inside cavity 1 and another point charge q_2 is inside cavity 2. A point charge q is placed outside the conductor. For the situation described above, answer the following questions. The charge on outer surface of the conductor would be

A point charge q_1 is placed inside cavity 1 and another point charge q_2 is inside cavity 2. A point charge q is placed outside the conductor. For the situation described above, answer the following questions. If the potential of the conductor is V_0 and charge q_2 is placed at the center of cavity 2, then potential at point Q is

A conducting spherical shell is earthed. A positive charge +q_1 is placed at the center and another small positive charge +q_2 is placed at a distance r from q_1 . Ignore the effect of induced charge due to q_2 on the sphere. Then the coulomb force on q_2 is

A point charge q is placed in a cavity in a metal block. If a charge Q is brought outside the metal, will the charge q feel an electric force?

Consider two positive point charges, each of magnitude q, placed on the y-axis at the points (0, a) and (0, -a). A positively charged particle of charge q' and mass m is displaced slightly from the origin in the direction of the positive x-axis. Speed of charge q' at infinity is

Home
Profile