4 ms·The one that causes pain in ears.by tomerbd 6y agoThe one that causes pain in ears.copperx 6y agoAre you talking about pain that radiates out of your ears?tomerbd 6y ago"Overall, extremely low frequency magnetic fields were evaluated as possibly carcinogenic to humans (Group 2B)." https://www.ncbi.nlm.nih.gov/books/NBK390731/ https://www.ncbi.nlm.nih.gov/books/NBK390731/