In storing magnets, keepers are used to
A
reduced self-demagnetization
B
cancel the effect of the earth's magnetic field
C
protect the magnet from stray electric field
D
increase the strangth of the magnets
Verified Correct Answer: A.
Physical Principles & Numerical Solution
No expanded working has been attached for this question yet. The verified answer is Option A.
Source: Myschool Past Questions Archive (Record #45677)