An infinitely long straight conductor $AB$ is fixed and a current is passed through it. Another movable straight wire $CD$ of finite length and carrying current is held perpendicular to it and released. Neglect weight of the wire
  • AThe rod $CD$ will move upwards parallel to itself
  • BThe rod $CD$ will move downwards parallel to itself
  • CThe rod $CD$ will move upward and turn clockwise at the same time
  • DThe rod $CD$ will move upward and turn anti-clockwise at the same time
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