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The change in the total energy of a body moving because of work being done on it is attributed by the change in kinetic energy only when ______(a) It moves extremely slowly(b) It moves with a very high velocity(c) It moves on an equipotential surface(d) It moves with a positive accelerationI had been asked this question in an interview for job.This interesting question is from Work-Energy Theorem topic in division Work, Energy and Power of Physics – Class 11

Answer»

Correct option is (c) It moves on an equipotential surface

Easiest EXPLANATION: An equipotential surface is defined as a surface on which the POTENTIAL of the body is same everywhere. Hence the potential of a body moving on an equipotential surface does not CHANGE. THEREFORE, the total change in energy is ATTRIBUTED by the change in the kinetic energy of the body.



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