ENGR 12
Assignment 3
Due: next wed
Part I. Drills -- 1 point each
Find the equivalent resistance at terminals a and b.
1)
2)
3)
4) Use voltage division to find the voltages v1 and v2
a)
b)
5) Find the current i using current division
a.
b.
Part II. Assisted Problem Solving – 2 pts each
6
PLAN
1) Find the equivalent Resistances for the left and
right branches
2) use the current divider formula to find the current
going into left and right branches
3) Find vo using OL and io using another current
divider operation
PLAN
7
1) Using no-load vo=4V, solve for R2 using the
voltage divider formula
2) No using the loaded vo=3V, find Reff the R2||RL
effective value that will make the loaded vo=3V
3) Set R2||RL = Reff and then solve for RL.
Part III. Unassisted Problem Solving – 3 points each
8) The current in the 12 Ohm resistor is 1A as shown
a) Vind Vg the value of the voltage source
b) Find the power dissipated in the 20 Ohm resistor