#21

Find the following quantities R T = I T =V 30  = I 50  

Combine all series resistors

Combine Parallel Resistors

Now combine series resistors

Combine parallel resistors

Combine Series Resistors

Total Resistance

Total Current

Find the voltage into the equivalent resistors

Calculate Current, Voltage into the loop that has the resistor you want

Finding the Voltage at the 30  Resistor

Focus in on the left Equivalent Resistor

Looking at the Series Resistors

Final Answers R T =25.6  I T =4.70 A V 30  = 23.4 V I 50  .374 A

#22

Find the following terms R T = I T =I 4  =V 8  =

Calculate total ResistanceSum all series resistors

Combine First Parallel Component

Combine Second Parallel Component

Combine Series Resistors

Combine Parallel Resistors

Combine Series Resistors

Calculate I T

Calculate the Current at the 4  resistor

Go Back to the Original Schematic

Calculating Voltage at the 8  Resistor

Calculating the voltage in the 8  resistor

Solution R T = 7.48  I T =1.2 A I 4  =.51 A V 8  =4.03 V