Circuit theory notes for studying, Lecture notes of Circuit Theory

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at

all

time

outside

the

element

:

d  B

dt

0

at

all

time

inside

the

element

dQ

enc

dt

$

&







$

"











"

$



!

#

#

!

v ij^

dq dw



i

dt dq

q ( t ) = i ( t )

dt


 t



i

&'

p

dt dw



NOTE: this does not mean the power is negative.

It depends on the numerical values of v and i

Example:

v = -1 V, i = 1 A

= -vi = 1W

 
 

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i k^

node

k

v ij^

loop

l

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V

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