V, 
V, 
and
.
Hint: writing down the loop-current equations in terms of the
symbols will give you most of the marks.
and 
.
- What is the Thevenin equivalent voltage?
- What is the Thevenin equivalent resistance?
- For a variable load resistance placed externally between the
terminals A and B, plot the current through the load as a
function of
. Label the intercepts on both axes.
for the circuit shown below.
Label both intercepts and the slope.
, across the 3 
load resistor for the
circuit below by replacing the remaining circuit by its Thevenin
equivalent. Hint: You can check your answer by direct analysis
of the entire circuit.
