Home
Class 12
PHYSICS
If the total charge enclosed by a surfac...

If the total charge enclosed by a surface is zero, does it imply that the electric field everywhere on the surface is zero ? Conversely, if the electric field everywhere on a surface is zero, does it imply that net charge inside is zero.

Text Solution

Verified by Experts

Electric flux `phi = oint_(S) vecE. dvecS =q/(epsilon_(0))`
In left side of equation, `vecE` is electric field on the surface by charges inside and outside the surface. But, in right side of equation, q is the charge enclosed by the surface.
It means, if q = 0, then may `E ne 0` because there may be E due to charges outside the surface. But, if E = 0, then q = 0. (Charge enclosed by surface)
Promotional Banner

Topper's Solved these Questions

  • ELECTRIC CHARGES AND FIELDS

    KUMAR PRAKASHAN|Exercise SECTION C NCERT EXEMPLAR SOLUTION (SHORT ANSWER TYPE QUESTIONS)|6 Videos

  • ELECTRIC CHARGES AND FIELDS

    KUMAR PRAKASHAN|Exercise SECTION C NCERT EXEMPLAR SOLUTION (LONG ANSWER TYPE QUESTIONS)|6 Videos

  • ELECTRIC CHARGES AND FIELDS

    KUMAR PRAKASHAN|Exercise SECTION C NCERT EXEMPLAR SOLUTION (MULTIPLE CHOICE QUESTIONS (MORE THAN ONE OPTION))|6 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    KUMAR PRAKASHAN|Exercise Section-D (MCQs asked in GUJCET/Board Exam)|1 Videos

  • ELECTROMAGNETIC INDUCTION

    KUMAR PRAKASHAN|Exercise Section D MCQs (MCQs asked in Competitive Exams )|38 Videos

Similar Questions

Explore conceptually related problems

A Gaussian surface in the fig. is shown by dotted line. The electric field on the surface will be :-

If the uniform surface charge density on the infinite plane sheet is sigma , electric field near the surface will be

Equipotential surface through a point is………… to the electric field at that point.

Draw an equipotential surface for an uniform electric field.

Write equation of electric field by point charge How does it depend on distance ?

Equipotential surface through a point is ...... to the electric field at that point.

Give reason : "If net flux assocaited with closec surface is zero, then net charge enclosed b that surface is zero."

A hollow charged conductor has a tiny hole cut in to its surface show that the electric field in the hole is n where n is the charge density near the hole

At the surface of a charged conductor electrostatic field must be normal to the surface at every point'. Explain.

The Gaussian surface for calculating the electric field due to a charge distribution is ....