Two conductors shown below will:
Correct answer: A. Attract
- A. Attract
- B. Repel
- C. Neither repel nor attract
- D. Data insufficient
Explanation
Two conductors show attraction. Both the conductors are marked with dots and the currents are both flowing toward the observer (i.e. in the same direction). In this case, the conductors are infinitely long, so the magnetic field lines will be circular around the conductors. The direction of the magnetic field lines is given by the right-hand rule. If you curl your right hand around the conductor with your thumb pointing in the direction of the current, then the magnetic field lines will be in the direction of your fingers. Since both have the same direction for current the direction for the magnetic field will also be the same. Hence, both wires will attract 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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