Which of the following is true about electromagnet? *
1 point
a. An electromagnet can be made stronger by using less coil of wire
b. An electromagnet may be produced by making electricity flow through coil of wire wound in iron nail
c. Number of dry cells used affects magnetism of an electromagnet. More dry cell means less magnetism
d. Electromagnets are permanent magnets that can attract any metal or magnetic material
Answers & Comments
Explanation:
Paki tulungan niyo nalang po sya hindi ko po alam yan sorry po talaga
Answer:
D. Electromagnets are permanent magnets that can attract any metal or magnetic material
Explanation:
Pa brianliest po