Two long parallel wires carry currents in the same direction. The force between them is
Answer and explanation
Correct answer: A. attractive
Parallel currents attract and antiparallel currents repel.
Answer: attractive.
Why not the others: repulsive: this is true for opposite currents. zero: currents produce magnetic fields. alternately attractive and repulsive: it is steady for steady currents.
Answer: attractive.
Why not the others: repulsive: this is true for opposite currents. zero: currents produce magnetic fields. alternately attractive and repulsive: it is steady for steady currents.
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