How it Works and Measurement
- Direction: By convention, current is defined as the flow of positive charge. Even though electrons (which are negative) physically travel from the negative to the positive terminal of a power source, conventional current is described as flowing from positive to negative.
Types of Electric Current
- Direct Current (DC): The electric charge flows continuously in one single, unidirectional path. DC is commonly produced by batteries, solar panels, and electronic devices.
- Alternating Current (AC): The flow of electric charge periodically reverses direction. AC is the standard form of electricity delivered to homes and businesses by electrical grids, as it is highly efficient for long-distance transmission.
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