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If a small charge q is moved along a clo...

If a small charge q is moved along a closed path in the field between the plates of a parallel plate capacitor, will any work be done by the agent that moves the charge?

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No, because electric field is conservative, so net work done in a closed path should be zero.
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Knowledge Check

  • The separation between the plates of a charged parallel-plate capacitor is increased. The force between the plates

    A
    increases
    B
    decreases
    C
    remains same
    D
    first increases then decreases

  • A parallel plate capacitor is charged. If the plates are pulled apart

    A
    the potential difference increases
    B
    the capacitance increases
    C
    the total charge increases
    D
    the charge and the potential difference remain the same

  • The plates of a parallel plate capacitor are not exactly parallel. The surface charge density is therefore,

    A
    higher at the closer end
    B
    the surface charge density will not be uniform
    C
    each plate will have the same potential at each point.
    D
    the electric field is smallest where the plates are closest.

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