A diagram shows a wire carrying a current in vertical direction. The magnetic field drawn using compass needles around the wire are concentric circles in a plane perpendicular to the direction of current.
Which statement about the current and magnetic field correctly describes this figure as well as all electromagnets?
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Responses
The current, which points upward, is generated by the sporadic magnetic field.
The current, which points upward, is generated by the sporadic magnetic field.
The current generates the magnetic field and is parallel and opposite to the direction of the magnetic field.
The current generates the magnetic field and is parallel and opposite to the direction of the magnetic field.
The current generated by the magnetic field is parallel and points in the same direction as the magnetic field.
The current generated by the magnetic field is parallel and points in the same direction as the magnetic field.
The current generates and is perpendicular to the magnetic field.
1 answer
The correct statement that describes the relationship between the current and the magnetic field generated by an electromagnet is:
The current generates and is perpendicular to the magnetic field.
This is consistent with the right-hand rule: if you point your thumb in the direction of the current, your fingers will curl around the wire in the direction of the magnetic field lines. Thus, the current is perpendicular to the magnetic field it generates.
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