Electric Current and its Effects - Electric Components.

The hazards of electricity (see table below) depend on the amount of electrical current, its frequency, its duration, its path through the body, and the physical condition of the person. Alternating current at 60 Hz is slightly more dangerous than direct current, but high frequency currents (greater than a few kHz) are safer because they tend to flow on the surface of the skin and away from.

Transport of perishable foods, drugs and drinks, in good condition, from one corner of the globe to another, is made possible by this device. Again, labour in every form in the house, in office, and in factories is simplified by the introduction of electrical devices.Among domestic services, the machinery of every type is worked more cheaply and efficiently by electricity.