Two parallel wires are carrying current in opposite directions. These two wires
Correct answer: B. will repel each other
- A. will attract each other
- B. will repel each other
- C. will have no effect on each other
- D. None of the above
Explanation
If two parallel wires carry current in opposite directions, they repel each other, whereas if two parallel wires carry current in the same direction, they attract each other.
This question appeared on the ETEA MDCAT 2006 paper, which you can sit online with every answer explained.
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About Magnetic Flux Density
Magnetic flux density measures the magnetic force acting on a current carrying conductor or moving charge in a magnetic field. Work includes the relations B equals F divided by IL and F equals qvB, the tesla as its SI unit, field direction and the distinction between flux density and magnetic flux.
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