An electrical current is very damaging to the human body since the body is a very good conductor of electricity. An electrical current can cause damage to the body in several ways:
Cardiac arrest due to the electrical effect on the heart
Massive muscle destruction from a current passing through the body
Thermal burns from contact with the electrical source
Jacob L. Heller, MD, MHA, Emergency Medicine, Virginia Mason Medical Center, Seattle, Washington. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.