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The definition of voltage as work per unit charge lends itself very conveniently to the introduction of power. Recall that power is defined as the work done per unit time. Thus, the power, P , either generated or dissipated by a circuit element can be represented by the following relationship: Power = Thus, Work Work Charge = = Voltage × Current Time Charge Time (2.9)The electrical power generated by an active element, or that dissipated or stored by a passive element, is equal to the product of the voltage across the element and the current flowing through ...
Nội dung trích xuất từ tài liệu:
Principles And Applications Of Electrical Engineering P2
