The correct answer is (a) Attraction between unlike charges. Electric field lines contract longitudinally due to the attractive force between opposite charges, which pulls the field lines together, creating a tension-like effect along their length. Class 12th Science Physics NCERT ...
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The correct answer is (c) Electric field. The electric field is a vector quantity because it has both magnitude and direction. In contrast, electric charge, electric flux, and electric potential are scalar quantities, having only magnitude. Class 12th Science Physics ...
The correct answer is:(c) 4L. The electric field due to a point charge is given by:E =kQ/r² where k is Coulomb’s constant, Q is the charge, and r is the distance from the charge. Let the required point be at ...
The correct answer is:(d) -q/4. For the system to be in equilibrium, the net force on each charge must be zero. When charge Q is placed at the center of two charges q and q, it must balance the forces ...
The correct answer is:(a) loses mass Explanation: When a body becomes positively charged, it loses electrons, which have a small mass. Although the mass loss is extremely tiny, it still occurs due to the removal of negatively charged electrons. Class ...