Home
Class 12
PHYSICS
A soap bubble is given a negative charge...

A soap bubble is given a negative charge, then its radius

A

Decreases

B

Increases

C

Remains unchanged

D

Nothing can be predicted as information is insufficient

Text Solution

Verified by Experts

The correct Answer is:
B
For attain more stability every system tends to decrease its potential energy. When we increase charge on soap bubble its radius increases as `U prop 1/r`
Promotional Banner

Topper's Solved these Questions

  • ELECTROSTATICS

    ERRORLESS|Exercise NCERT BASED QUESTIONS (Electric Dipole)|21 Videos

  • ELECTROSTATICS

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

  • ELECTROSTATICS

    ERRORLESS|Exercise ASSERTION & REASON|25 Videos

  • ELECTRONICS

    ERRORLESS|Exercise Assertion & Reason|26 Videos

  • MAGNETIC EFFECTS OF CURRENT

    ERRORLESS|Exercise ASSERTION & REASON |18 Videos

Similar Questions

Explore conceptually related problems

a soap bubble is given positive charge, then its radius.

An isolated soap bubble is kept in a container in which the pressure is maintained at P_(0) . The bubble is given some charge due to which its radius increases to R_(0) . If the surface tension of the soap bubble is T, then the charge given to the bubble is

If two soap bubbles of equal radii r coalesce then the radius of curvature of interface between two bubbles will be

When charge is given to a soap bubble, it shows:Two equal negative charges -q are fixed fixed at point (0, -a) and (0,a) on y-axis. A positive charge Q is released from rest at the point (2a, 0) on the x-axis. The charge Q will:

When a conducting soap bubble is negatively charged then

A soap bubble is charged to a potential of 16V. Its radius is then doubled. The potential of the bubble now will be

A soap bubble is charged to a potential 12 V. If its radius is dubled, then the potential of the bubble becomes

If the radius of a soap bubble is four times that of another, then the ratio of their pressures will be

ERRORLESS-ELECTROSTATICS-NCERT BASED QUESTIONS (Electric Field and Potential)
  1. Three cahrges each+q, are placed at the corners of an isosceles trinag...

    Text Solution

    |

  2. An electron of mass m and charge q is accelerated from rest in a unifo...

    Text Solution

    |

  3. A soap bubble is given a negative charge, then its radius

    Text Solution

    |

  4. A point charge is surrounded symmetrically by six identical charges at...

    Text Solution

    |

  5. A positively charged particle is released from rest in a uniform elect...

    Text Solution

    |

  6. The mean free path of electrons in a metal is 4 xx 10^(-8)m The elect...

    Text Solution

    |

  7. A particle A has chrage +q and a particle B has charge +4q with each o...

    Text Solution

    |

  8. A ball of mass 1g and charge 10^(-8) C moves from a point A. Where pot...

    Text Solution

    |

  9. If identical charges (-q) are placed at each corner of a cube of side ...

    Text Solution

    |

  10. Two charges q(1) and q(2) are placed 30 cm apart, as shown in the figu...

    Text Solution

    |

  11. Two fixed charge A and B of 5 mu C each are separated by a distance o...

    Text Solution

    |

  12. A particle of mass M and charge q, initially at rest, accelerated by a...

    Text Solution

    |

  13. In moving from A to B along an electric field line, the work done by t...

    Text Solution

    |

  14. Consider a spherical shell of radius R wil a total charge +Q uniformly...

    Text Solution

    |

  15. The figure gives the electric potential V as a function of distance th...

    Text Solution

    |

  16. In a hollow spherical shell, potential (V) changes with respect to dis...

    Text Solution

    |

  17. Two thin dielectric slabs of dielectric constants K(1) and K(2) (K(1) ...

    Text Solution

    |

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

    Text Solution

    |

  19. The line AA' is on a charged infinite conducting plane which is perpen...

    Text Solution

    |

  20. Pick out the statement which is incorrect?

    Text Solution

    |