Instead of permanent magnets, electromagnets are used as field magnets in power generators. Find out reasons from the following and write them down. a. The strength of permanent magnets goes on decreasing. b. The strength of electromagnets goes on decreasing. c. Electromagnets can retain the required magnetic strength.
Instead of permanent magnets, electromagnets are used as field magnets in power generators. Find out reasons from the following and write them down. a. The strength of permanent magnets goes on decreasing. b. The strength of electromagnets goes on decreasing. c. Electromagnets can retain the required magnetic strength.
Harshit Singh , 4 Years ago
Grade 12th pass
