- #1
iharuyuki
- 16
- 1
Homework Statement
Homework Equations
V(oc) = I(sc) * R(th)
Kirchoff's voltage law
The Attempt at a Solution
a) is okay. For part b):
After redrawing with the R(th) and V(th) found in part a):
Equations of loops:
s is I(sc)
a is I(left loop)
left loop:
-8 + a(4000) + (a-s)(4000) = 0
right loop:
(s-a)(4000) - (2000)x = 0
I(x):
a-s = x
I(sc) comes out to 0.2 mA
Then V(oc) = I(sc) R(th)
4 V = (0.002 A) R(th)
R(th) = 2 kOhm = R(L max)
However, this is 1 kOhm off from the answer.
What is the problem with the above working?
Thank you very much.