The correct answer is (a) no net charge is enclosed by the surface. According to Gauss’s law, the net electric flux through a closed surface is proportional to the total charge enclosed. If the flux is zero, the total enclosed ...
Category: Class 12 Physics
NCERT Solutions for Class 12 Physics updated for CBSE academic session 2021-2022.
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(a) spheres. At a large distance, a collection of charges with a nonzero net charge behaves like a point charge, producing spherical equipotential surfaces centered around the effective charge distribution. Class 12th Science Physics NCERT MCQ Questions NCERT Books MCQ ...
(d) Zero. On the equatorial line of an electric dipole, the potential at any point is always zero because the contributions from the positive and negative charges cancel out, resulting in no net electric potential. Class 12th Science Physics NCERT ...
Electric field lines contract lengthwise because they represent the force experienced by a positive test charge in the field. This contraction indicates the attraction between opposite charges, as field lines always originate from positive charges and terminate at negative charges, ...
When a neutral balloon is charged, its size increases. This happens because like charges repel, causing the charged particles on the balloon’s surface to push apart. This increases the internal electrostatic pressure, slightly expanding the balloon. Thus, the correct answer ...