Which graph correctly gives the magnitude of the magnetic field outside an infinitely long straight current carrying wire as a function of the distance "r" from the wire?
Correct answer: D. D
- A. A
- B. B
- C. C
- D. D
Explanation
For an infinitely long straight wire carrying current I, the magnitude of the magnetic field (B) at a distance "r" from the wire is inversely proportional to the distance "r." Mathematically, it follows the following relationship:B ∝ 1/rThis means that as you move farther away from the wire, the magnitude of the magnetic field decreases. The graph of the magnetic field magnitude (B) versus the distance "r" will show a hyperbolic shape. As "r" increases, B decreases, and the graph approaches zero asymptotically.In summary, the graph should look like a hyperbola with the magnetic field magnitude decreasing as you move away from the wire along the horizontal axis (distance "r") and approaching zero as the distance increases.
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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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