Final answer:
True, hazards of electric-powered tools include thermal hazards, which can cause fires, and shock hazards, which can range from painful shocks to heart-stopping lethality.
Step-by-step explanation:
Among the chief hazards of electric-powered tools are burns and slight shocks which can lead to injuries or even heart failure. This statement is True. There are two known hazards of electricity—thermal and shock. Thermal hazards occur when excessive electric power causes undesired thermal effects, such as starting a fire in the wall of a house. Shock hazards occur when electric current passes through a person, with shocks ranging in severity from painful but otherwise harmless to potentially lethal, capable of causing heart failure.