The equation of an electric field line in the $xy$-plane is given by ${x^2} + {y^2} = 1$. What is true for a particle with unit positive charge initially at rest at the point $(1, 0)$ in the $xy$-plane?

  • A
    It will not move at all
  • B
    It will move along a straight line
  • C
    It will move along the circular field line
  • D
    Information is insufficient to draw any conclusion

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