A two-terminal network has terminal and a grounded terminal

PHYSICS · Multi-part · Fermi University Physics · Electronics, Instrumentation & Communication · Circuit foundations and passive networks · Circuit foundations and passive networks

Electronics for Measurement, Ch The resistive network: two laws, one equivalent and the loading error

Problem

A two-terminal network has terminal

A

and a grounded terminal. Two branches run from

A

to ground: branch 1 is an ideal

15.0\,\mathrm{V}

source in series with a

5.0\,\mathrm{k}\Omega

resistor, and branch 2 is an ideal

9.0\,\mathrm{V}

source in series with a

15.0\,\mathrm{k}\Omega

resistor (both sources' positive terminals face towards

A

). No other branch is connected at

A

. ((a)) Find the open-circuit voltage

V_{\rm th}

A

with respect to ground. ((b)) Find the short-circuit current between

A

and ground, and hence

R_{\rm th}

. ((c)) State the single ideal source and single resistor that replace this network at terminals

A

-ground, and check

R_{\rm th}

by the source-suppression rule.

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