What is the main difference between a bar magnet and an electromagnet?
A. An electromagnet is a temporary magnet.
B. A bar magnet is a temporary magnet.
C. The strength of an electromagnet is always stronger than a bar magnet.
D. The strength of a bar magnet is always stronger than an electromagnet.
Answer:A
What is the main difference between a bar magnet and an electromagnet?
A. An electromagnet is a temporary magnet. B. A bar magnet is a temporary magnet. C. The strength of an electromagnet is always stronger than a bar magnet. D. The strength of a bar magnet is always stronger than an electromagnet.