$A$ and $B$ are two conductors carrying a current $i$ in the same direction. $x$ and $y$ are two electron beams moving in the same direction.

  • A
    There will be repulsion between $A$ and $B$,and attraction between $x$ and $y$.
  • B
    There will be attraction between $A$ and $B$,and repulsion between $x$ and $y$.
  • C
    There will be repulsion between $A$ and $B$,and also between $x$ and $y$.
  • D
    There will be attraction between $A$ and $B$,and also between $x$ and $y$.

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