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Lecture 2 - Resistive Circuit Elements Learning objectives...

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Resistive Circuit Elements Learning objectives of this lecture z Explain voltage and current sources, resistors and conductors z Solve for currents, voltages and powers in simple resistive circuits z Determine equivalent resistance KCL and KVL = = N n n i 1 0 = = N n n v 1 0 Resistive Circuit Elements – Conductor – Voltage source – Current source –Res is tor Conductor z Symbol z The voltage between the two ends of an ideal conductor is always zero irrespective of the current flowing through it. i v 0 Voltage Source z Symbol z An ideal voltage source provides a prescribed voltage across its terminals irrespective of the current flowing through it. + _ v s V s v 0 v s i

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02_19.jpg Current Source z Symbol z An ideal current source provides a prescribed current to any circuit connected to it. i s v 0 i s i Resistor z Symbol z The voltage v across an resistor R is proportional to the current i through the resistor z Unit: 1 ohm = 1volt/ampere or 1 = 1 V/A R + v i v 0 R i Ohm’s Law z v=iR
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Lecture 2 - Resistive Circuit Elements Learning objectives...

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