MCQ
Two long and straight conductors, placed parallel to each other are separated by $20 \ cm.$ carrying current of $3A$ and $5A$ respectively in opposite direction. The force per unit length exerted by each conductor on the other is $(µ_0 = 4\pi \times 10^{-7} Wb/Am)$
  • $1.5 \times 10^{-5} \frac{ N }{ m }$, repulsive
  • B
    $3 \times 10^{-5} \frac{ N }{ m }$, repulsive
  • C
    $3 \times 10^{-5} \frac{ N }{ m }$, attractive
  • D
    $1.5 \times 10^{-5} \frac{ N }{ m }$, attractive

Answer

Correct option: A.
$1.5 \times 10^{-5} \frac{ N }{ m }$, repulsive
$1.5 \times 10^{-5} \frac{ N }{ m }$, repulsive

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