21 ee1002introductiontocircuitsandsystems

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Unformatted text preview: short circuit. Formally, a short circuit is defined as a circuit element across which the voltage is zero, regardless of the current flowing through it. Physically, as a wire or conductor of appropriate size depending on the current will have a very small voltage drop across it and hence can be approximated as a short circuit. i v R0 v 0 for any i Fig. Short circuit A circuit element whose resistance approaches infinity is called an open circuit. Again, an open circuit would mean the current flowing through it will be zero regardless of the voltage applied across it. Physically, any break in the conducting path of a circuit is called an open circuit. This is an idealization only and the insulation between two points will break down at sufficiently high voltages. 20 EE1002 Introduction to Circuits and Systems If insulation is air, then there may be arcing very high voltages (this principle is used in spark plug of internal combustion engine). i v R i 0 for any v Fig. Open Circuit Conductors The voltage between the ends of an ideal conductor is zero regardless of the curr...
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This document was uploaded on 01/20/2014.

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