more technical; often used for forces and motion involving moving charges
文法句型
electromagnetic + noun
be + electromagnetic
用法筆記
Most often placed before scientific nouns such as field, wave, signal, or radiation. In less technical writing, speakers often explain the idea with a longer phrase instead of using the adjective alone.
常見錯誤
The engineer studied an electric and magnetic field around the cable.
The engineer studied the electromagnetic field around the cable.
use electromagnetic when one combined field is meant, not two separate adjectives.