A horse shoe magnet is an example of
A
a magnetic oxide
B
a natural magnet
C
an electromagnet
D
a permanent magnet
Verified Correct Answer: D.
Step-by-Step Mathematical Solution
A horseshoe magnet is an artificially made permanent magnet (not a natural magnet like lodestone, and not an electromagnet).
Source: WAEC / JAMB / NECO Classroom Archive (Record #78299)