Chapter 12. Resistance and DC Circuits. Introduction Current and Charge Voltage Sources Current Sources Resistance and Ohm’s Law Resistors in Series and Parallel Kirchhoff’s Laws Th é venin’s and Norton’s Theorems Superposition Nodal Analysis Mesh Analysis
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where 1/R = 1/R1 + 1/R2 +…+ 1/RN
At any instant, the algebraic sum of all the currents flowing into any node in a circuit is zero
At any instant the algebraic sum of all the voltages around any loop in a circuit is zero
As far as its appearance from outside is concerned, any two terminal network of resistors and energy sources can be replaced by a series combination of an ideal voltage source V and a resistor R, where V is the open-circuit voltage of the network and R is the voltage that would be measured between the output terminals if the energy sources were removed and replaced by their internal resistance.
As far as its appearance from outside is concerned, any two terminal network of resistors and energy sources can be replaced by a parallel combination of an ideal current source I and a resistor R, where I is the short-circuit current of the network and R is the voltage that would be measured between the output terminals if the energy sources were removed and replaced by their internal resistance.
Determine Thévenin and Norton equivalent circuits of the following circuit.
In any linear network of resistors, voltage sources and current sources, each voltage and current in the circuit is equal to the algebraic sum of the voltages or currents that would be present if each source were to be considered separately. When determining the effects of a single source the remaining sources are replaced by their internal resistance.
Determine the output voltage V of the following circuit.
Determine the current I1 in the following circuit
V2= 32.34 V
V3 = 40.14 V
Determine the voltage across the 10 resistor