Question

If two straight current carrying wires are kept perpendicular to each other almost touching, then the wires

• A. Attract each other
• B. Repel each other
• C. Remain Stationary
• D. Become parallel to each other

Answer 1

Answer: (D)

Become parallel to each other

Solution: Let given figure shows two long current carrying conductor placed ${\perp }^{rd}$ to each other.

Here $F_1$ & $F_2$ be equal in magnitude and opposite in direction. It will provide torque & conductor will rotate & become parallel.

$\Rightarrow$ Even after that it may be attracted or repelled depend upon-direction of current, but initially it become parallel to $\left(1\right)$.