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STD 12 - 2. Electric potential and capacitance — JEE STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceJEESTD 12 - 2. Electric potential and capacitance4 Marks
MCQ
The charge given to any conductor resides on its outer surface, because
  • ✓
    The free charge tends to be in its minimum potential energy state
  • B
    The free charge tends to be in its minimum kinetic energy state
  • C
    The free charge tends to be in its maximum potential energy state
  • D
    The free charge tends to be in its maximum kinetic energy state
✓

Answer

Correct option: A.
The free charge tends to be in its minimum potential energy state
a
The electrostatic energy of a solid object (with specified shape and total charge) is minimum when that charge is spread over the surface. Like any other free dynamical system, the charge on a conductor will seek the configuration that minimizes its potential energy.

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