Question on: JAMB Physics - 2020
A magnetic needle is suspended first at the earth's north magnetic pole and then at a point on the magnetic equator. The respective angles between the needle and the horizontal are
A
0\(^o\) and 0\(^o\)
B
60\(^o\) and 60\(^o\)
C
90\(^o\) and 90\(^o\)
D
90\(^o\) and 0\(^o\)
Ask EduPadi AI for a detailed answer
Correct Option: A
Here's the breakdown:
* **At the Earth's North Magnetic Pole:** The magnetic field lines of the Earth are vertical, pointing downwards. When a magnetic needle is suspended at this location, it aligns itself with the magnetic field. Therefore, the angle between the needle and the horizontal is 90 degrees.
* **At the Magnetic Equator:** The magnetic field lines of the Earth are horizontal. At the magnetic equator, a freely suspended magnetic needle aligns itself horizontally. Hence, the angle between the needle and the horizontal is 0 degrees.
Therefore, the respective angles are 90° and 0°.
Add your answer
Please share this, thanks!
No responses