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a soap bubble is given positive charge, ...

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

A

increases

B

increases if the charge in positive

C

decreases if the charge in negative

D

is not affected

Text Solution

Verified by Experts

The correct Answer is:
A
Due to electric repulsion its size should increase.
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MODERN PUBLICATION-ELECTRIC CHARGES AND FIELDS -COMPETITION FILE ( Objective Question (A.MCQ) )
  1. A point charge Q is kept at the centre of a square face of edge length...

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  2. There is a closed three-dimensional surface and the electric flux asso...

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

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  4. Surface subtends a solid angle of pi on a point charge +q. Electric fl...

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  5. State the principle of conservation of electric charge

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  6. Two identical simple pendulums P and Q are susupended from a common po...

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  7. An object of height 6 cm is placed perpendicular to the principal axis...

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  8. The figure given below shows one spring-mass system. Let T1 be the tim...

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  9. There is one non-conducting uniformly charged hemispherical body, whic...

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  10. A small electric dipole of dipole moment P is placed at a distance r f...

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  11. There is a uniformly charged non-conducting solid sphere. A spherical ...

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  12. There is a metal object A connected to the earth with the help of a co...

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  13. A Charge Q is distributed uniformly on a ring of radius r. A sphere of...

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  14. A point charge -q is moving around another charge Q under the electros...

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  15. A solid sphere of radius R has a charge Q distributed in its volume wi...

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  16. An electron of mass me starts from rest, moves a certain distance in u...

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  17. A point charge Q is placed at one of the vertices of a cubical block. ...

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  18. A point charge Q is placed at the corner of a cube. How much electric ...

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  19. A point charge is placed at the midpoint of an edge of cube. How much ...

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  20. Two non-conducting spheres of radii R(1) and R(2) and carrying unifo...

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