Electric Circuits and Networks, Ist Edition by Pearson

new node and the old one. Introduction of a shorting link causes no change in the circuit

variables anywhere in the circuit. However, now we identify this newly introduced short-

circuit element as the element exclusively owned by mesh M

k

and identify the mesh cur-

rent variable i

k

as the current that flows in this element. We can introduce an ammeter

there as shown in Fig. 4.7-6(b) and measure i

k

.

However, even this technique will fail to make the mesh current variable i

k

meas-

urable if R

2

is a member of yet another mesh. If the entire periphery of the mesh M

k

is

shared by some mesh or other, then, a short-circuit element introduced anywhere in the

periphery ...