SOLUTION

The category of a source whose output (current or voltage) is a function of some other voltage or current in a circuit is known as a dependent source. A different symbol, in the shape of a diamond, is used to represent the dependent source and distinguish it from the independent source.

Voltage and current sources can be either independent or dependent. A dependent source is controlled by an independent source, and a source can either be of a DC source or of a time-dependent (e.g. AC) type.

The important thing to remember about these sources is that they can either deliver or absorb electric power, generally maintaining either voltage or current. This behavior is of particular interest for circuit analysis and led to the creation of the ideal voltage source and the ideal current source as basic circuit elements.