Asked in PMC Practice Test 15 (2021) 2021Moderate

A field in which work done in a moving a body along the close path is zero is called:

Correct answer: B. Conservative field

  • A. Electric field
  • B. Conservative field
  • C. Magnetic field
  • D. None of these options is correct

Explanation

work done by a conservative force on a "closed path" is zero; that is, the work done by a conservative force on an object is zero if the object moves along a path that brings it back to its starting position.

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About Work

Work is done when a force produces displacement, with its value determined by the component of force along the displacement. The topic covers positive, negative and zero work, work by variable forces from force-displacement graphs, and the connection between net work and change in kinetic energy.

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