the normal healthy person will encounter n dangerous voltage, while ng the laboratory activity, circumstances occurs under which a electric shock may be experienced. Surprising shocks, while not ly dangerous in themselves, may cause secondary injury through uscular contraction that can hurl a person against a wall or workbench ly another more dangerous source of current. a precaution used by experienced engineers and technicians. Always hand in your pocket or behind you when measuring current and two hands are in with contact with the circuit, the current flows across and heart regions, which is very dangerous. E, with regard to the wiring of the circuit, ask the teacher to check it out​