Consider the following:
(1) An electromagnet works only when current flows.
(2) Soft iron is used for electromagnet cores.
(3) Steel is used for permanent magnets.
(4) Heating a magnet increases its magnetism.
Choose Your Option
A. 1 and 2
B. 1, 2 and 3
C. 1, 2, 3 and 4
D. Only 4
Solution & Explanation
No details explanation available for this question. Option B is the verified correct answer.