Find the equivalent impedance ZAB of the shown network, in ohms to one decimal place. Each resistor is 1 Ω and the dependent voltage source equals the voltage V across the central resistor.
The dependent source forces the left upper node to the same voltage V as the central upper node. Therefore no current flows through the resistor joining those two nodes. Input current flows through the right-hand one-ohm resistor and central one-ohm resistor in series. Thus ZAB=2.0 Ω. The dependent source must remain active when finding this impedance.
More Network Theorems questions
GATE 2023 BM Q38– In the shown circuit, the DC sources have voltages V₁ and V₂. To which expression is the…
GATE 2023 BM Q46– In the shown 10 V circuit, what load resistance R gives maximum power dissipation in R?
GATE 2022 BM Q52– Find the magnitude of current gain Iload/Iin in the shown dependent-source circuit, to two…
GATE 2021 BM Q13– Three resistors are connected to ideal sources as shown: current source 1.2 A, voltage…
GATE 2021 BM Q39– In the shown bridge, Vₛ=100 V, R₁=30 Ω,R₂=60 Ω,R₃=90 Ω,R₄=45 Ω,R₅=30 Ω. Find current…
GATE 2020 BM Q41– Find the nearest power dissipated in the 3 Ω resistor of the shown circuit, with 2 A…
