A flow of electric charge along a wire is what we called electrical current or electricity. The more charges that are passing along the wire will result to a larger current. For the charges to flow along the wire a force is required to push them and this force is called the voltage or potential difference. Charges will flow from regions of high potential to regions of low potential where the potential difference is the difference in potential of the two regions. Two regions have to be connected with a conductor to obtain charges to flow from a region of high potential to a region of low. Electrical circuits is a complete path, or circuit, is required before voltage can cause a current flow during resistances to perform work. There are a number of types of circuits, but all involve the same basic components. A power source (battery or alternator) produces voltage or electrical potential.

Dency Varghese

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