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e. Voltage, also known as (electrical) potential difference, electric pressure, or electric tension is the difference in electric potential between two points. [1] [2] In a static electric field, it corresponds to the work needed per unit of charge to move a positive test charge from the first point to the second point.
Ohm's law states that the electric current through a conductor between two points is directly proportional to the voltage across the two points. Introducing the constant of proportionality, the resistance, [1] one arrives at the three mathematical equations used to describe this relationship: [2] where I is the current through the conductor, V ...
Kirchhoff's circuit laws are two equalities that deal with the current and potential difference (commonly known as voltage) in the lumped element model of electrical circuits. They were first described in 1845 by German physicist Gustav Kirchhoff. [1] This generalized the work of Georg Ohm and preceded the work of James Clerk Maxwell.
Unit of. electric potential, electromotive force. Symbol. V. Named after. Alessandro Volta. SI base units. kg ⋅ m 2 ⋅ s −3 ⋅ A −1. The volt (symbol: V) is the unit of electric potential, electric potential difference ( voltage ), and electromotive force in the International System of Units (SI).
Electric power is the rate of transfer of electrical energy within a circuit. Its SI unit is the watt, the general unit of power, defined as one joule per second. Standard prefixes apply to watts as with other SI units: thousands, millions and billions of watts are called kilowatts, megawatts and gigawatts respectively.
Introducing the constant of proportionality, the resistance, one arrives at the usual mathematical equation that describes this relationship: =, where I is the current through the conductor in units of amperes , V is the potential difference measured across the conductor in units of volts , and R is the resistance of the conductor in units of ...
Definition. Power is the rate with respect to time at which work is done; it is the time derivative of work : where P is power, W is work, and t is time. We will now show that the mechanical power generated by a force F on a body moving at the velocity v can be expressed as the product: If a constant force F is applied throughout a distance x ...
Diode I-V diagram. Breakdown voltage is a parameter of a diode that defines the largest reverse voltage that can be applied without causing an exponential increase in the leakage current in the diode. Exceeding the breakdown voltage of a diode, per se, is not destructive; although, exceeding its current capacity will be.