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In a certain charge distribution, all points having zero potential can be joined by a circle S. Points inside S have positive potential and points outside S have negative potential. A positive charge, which is free to move, is placed inside S

  • Option 1)

    It will remain in equilibrium

  • Option 2)

    It can move inside S, but it cannot cross S

  • Option 3)

    It must cross S at some time

  • Option 4)

    It may move, but will ultimately return to its starting point

 

Answers (1)

As we learned

 

Negative Potential -

Due to Negative charge.

-

 

 

A free positive charge move from higher (positive) potential to lower (negative) potential. Hence, it must cross S at some time.


Option 1)

It will remain in equilibrium

Option 2)

It can move inside S, but it cannot cross S

Option 3)

It must cross S at some time

Option 4)

It may move, but will ultimately return to its starting point

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Vakul

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