SparkFun Forums 

Where electronics enthusiasts find answers.

By Manasa
Do electric and magnetic fields always exist together ? if so, why ?
Won't electric or magnetic field act alone ?
By jremington
Electric and magnetic fields are different aspects of the same phenomenon (electromagnetism). You can have a static electric field produced by fixed charges, but magnetism is observed as a result of moving charges, and changing magnetic fields induce electric currents.