Two long parallel wires Wire 1 and Wire 2 repel each other as shown in the figure. What could be the reasons?
Correct answer: B. Both carry current in opposite direction
- A. Both carry current in same direction
- B. Both carry current in opposite direction
- C. Wire 1 has current, but Wire 2 has no current
- D. Wire 2 has current, Wire 1 has no current
Explanation
Two parallel wires have currents travelling in opposite directions, the magnetic fields generated by those currents between the wires will both point in the same direction (use right hand grip rule). Thus, wires would repel each other.
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Magnetic flux density and magnetic flux describe the strength of a magnetic field and the field passing through a surface. A charged particle moving through a magnetic field experiences a force perpendicular to its velocity and may follow circular or helical motion, depending on the angle between velocity and field.
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