Two long, parallel conductors which are free to move arearranged 1.0 cm apart. A steady current of 20 A flows in each ofthe conductors in the same direction. The conductors:
Correct answer: B. Move towards each other
- A. Remain stationary
- B. Move towards each other
- C. Move away from each other
- D. Move at right angles to each other
Explanation
Two parallel currents flowing in the same direction attracteach other due to the magnetic fields they produce.If the currents were in opposite directions, the conductors would repel. Since both currents are 20 A and in the same direction, the conductors will move towards each other.
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About Electromagnetism
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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