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QPages 275-276: Q9: HC Verma: Concepts of Physics - Volume 2 Permanent Magnets Pages 275-276: Q9 Solution: Can the earth's magnetic field be vertical at a place? What…

⚠️ Common Exam Traps & Conceptual Pitfalls

Students often confuse the magnetic poles with the equator, incorrectly assuming the dip is $0^\circ$ or that the magnet remains horizontal. Remember that at the magnetic poles, the field lines are perpendicular to the surface, making the dip angle $90^\circ$ and forcing a freely suspended magnet to align vertically.

Can the earth's magnetic field be vertical at a place? What will happen to a freely suspended magnet at such a place? What is the value of dip here?

Step-by-Step Verified Solution

**Answer:** Yes, the earth's magnetic field can be vertical at a place. A freely suspended magnet will align vertically. The dip is 90�. **Step-by-Step Explanation:** At the magnetic poles of the earth, the magnetic field is vertical. A freely suspended magnet (free to rotate in any plane) will align itself along the vertical direction. The angle of dip at the magnetic poles is 90� [citation:3].

All Questions in this Chapter

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