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.
Most often, the spasms are caused by muscle strain from physical overexertion, muscle tension from stress or in reaction to pain at other locations, or physical overexertion from heavy lifting or strenuous exercise. For more information see neck pain causes.Muscles in the neck develop spasms that involve muscle contractions. This can result from sudden movements or twisting of the neck which puts compression on the muscle. This can cause excess stretching of the muscles which may tighten leading to pain.ost often, the spasms are caused by muscle strain from physical overexertion, muscle tension from stress or in reaction to pain at other locations, or physical overexertion from heavy lifting or strenuous exercise. For more information see neck pain causes.