
1.20 Circuit Variables and Circuit Elements
Inside the source
E E E
s e i
= − +( )
Inside the shorting wire E E
s i
= −
It must be noted that all the field quantities appearing in these equations are functions of space
as well as time and that these equations are valid at all points inside the source and wire. Strictly
speaking, they should have been expressed as below.
Inside the source E x y z t E x y z t E x y z t
s e i
( , , , ) [ ( , , , ) ( , , , )]= − +
Inside the shorting wire E x y z t E x y z t
s i
( , , , ) ( , , , )= −
Let a +1 C charge be taken around the circuit from B to A through the source and ...