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The Wiedemann–Franz law is a relationship in physics that relates the electrical conductivity of a metal to its thermal conductivity. It states that the ratio of the electrical conductivity to the thermal conductivity of a metal is proportional to the temperature and is equal to a constant known as the Lorenz number. The Wiedemann–Franz law is named after German physicists Georg Wiedemann and Robert Franz, who first proposed it in the mid-19th century.Wiedemann–Franz law Derivation:Mathematicall

The superposition theorem is a fundamental principle in electrical engineering that states that the response of a linear system to any input can be represented as the sum of the responses to individual inputs. In other words, the output of a linear system to a combination of inputs is equal to the sum of the outputs that would be produced by each input individually.The superposition theorem states that:“In any linear bilateral network with multiple sources, the response (voltage and current) in

Thevenin’s Theorem is a principle in electrical engineering that allows the complex impedance of an electric circuit to be reduced to a single equivalent impedance. It states that any linear, two-terminal electrical network can be represented by an equivalent circuit consisting of a single voltage source in series with a single impedance. The voltage of the source is the open-circuit voltage of the network, and the impedance is the impedance seen looking into the circuit with the voltage source

Millman’s Theorem is a principle in electrical engineering that allows the complex impedance of a series of resistors and voltage sources to be reduced to a single equivalent impedance. It states that any series circuit consisting of a number of resistors and voltage sources can be represented by an equivalent circuit consisting of a single resistor in parallel with a single voltage source. The resistor is the equivalent resistance of the circuit, and the voltage of the source is the equivalent

The Reciprocity Theorem is a principle in electromagnetics that relates the voltage and current at two points in a linear, passive network. It states that the ratio of the voltage at one point to the current at another point is equal to the ratio of the current at the first point to the voltage at the second point.What is the formula for the reciprocity theorem?Mathematically, the Reciprocity Theorem can be expressed as:V1/I1= V2/I2where:V1– the voltage at the first pointI1– the current at the f

The Compensation Theorem is a principle in electrical engineering that allows the response of a linear, two-port network to be determined based on the response of the network to a single input. It states that the response of a two-port network to any two inputs can be determined by measuring the response of the network to a single input and a zero input.The Compensation Theorem is based on the idea that the response of a linear, two-port network to any two inputs can be represented by a matrix,

The Delta-Star transformation is a technique in electrical engineering that allows the impedance of a three-phase electrical circuit to be transformed from a “delta” configuration to a “star” (also known as “Y”) configuration, or vice versa. The delta configuration is a circuit in which the three phases are connected in a loop, with each phase connected to the other two phases. The star configuration is a circuit in which the three phases are connected to a common point, or “neutral” point.The D

Fleming’s Right-Hand Rule is a principle in electromagnetism that describes the relationship between the direction of the current in a conductor, the direction of the magnetic field around the conductor, and the direction of the force on the conductor.Fleming’s Right-Hand Rule states that if the thumb, index finger, and middle finger of the right hand are pointed in the direction of the current, the direction of the magnetic field, and the direction of the force on the conductor, respectively, t