An electromagnetic coil is an electrical conductor such as a wire in the shape of a coil, spiral or helix. Electromagnetic coils are used in electrical engineering, in applications where electric currents interact with magnetic fields, in devices such as inductors, electromagnets, transformers, and sensor coils.
Causes of lower back spasms. Back spasms can be the result of injuries to the muscles, tendons, and ligaments in the back or it can be related to more serious medical conditions. Heavy lifting is a common cause of back spasms. Any activity that puts excessive strain on the muscles and ligaments in the lower back can cause an injury.
Injury is the most common cause of back pain. Improperly lifting heavy objects can cause back cramps. A hot bath can help to relax the muscles and eliminate back cramps. A heating pad can help relax muscles and eliminate back cramps.The muscles of the back. Back cramps may accompany menstrual cramps in women. Back cramps can be caused by poor posture.mproperly lifting heavy objects can cause back cramps. A hot bath can help to relax the muscles and eliminate back cramps. A heating pad can help relax muscles and eliminate back cramps. The muscles of the back.