The document describes the step-by-step process of solving a circuit with multiple resistors connected in series and parallel. It involves redrawing the circuit to combine series and parallel resistors into single equivalent resistors, then calculating the total resistance, current, and voltage drops across each component to solve the circuit. Key steps include calculating equivalent resistances of series and parallel groups and using Ohm's law to find current and voltage values throughout the circuit.

1. Solve Circuit: 75V R1 1200 Ω R2 1480 Ω R5 300 Ω R3 900 Ω R4 680 Ω

2. Solve Circuit: REDRAW Replace 2 series resistors with one 75V R1 1200 Ω R2 1480 Ω R5 300 Ω R3 900 Ω R4 680 Ω 75V R1 1200 Ω R2 1480 Ω R5 300 Ω

3. Solve Circuit: REDRAW Replace 2 series resistors with one Work out value Rb = 900 + 680 Rb = 1580 Ω 75V R1 1200 Ω R2 1480 Ω R5 300 Ω R3 900 Ω R4 680 Ω 75V R1 1200 Ω R2 1480 Ω R5 300 Ω Rb

4. Solve Circuit: REDRAW Replace 2 series resistors with one Work out value Rb = 900 + 680 Rb = 1580 Ω REDRAW Replace 2 parrellel resistors with one 75V R1 1200 Ω R2 1480 Ω R5 300 Ω R3 900 Ω R4 680 Ω 75V R1 1200 Ω R5 300 Ω 75V R1 1200 Ω R2 1480 Ω R5 300 Ω Rb

5. Solve Circuit: REDRAW Replace 2 series resistors with one Work out value Rb = 900 + 680 Rb = 1580 Ω REDRAW Replace 2 parrellel resistors with one Work out value 1/Rc = 1/1480 +1/1580 Rc = 764 Ω 75V R1 1200 Ω R2 1480 Ω R5 300 Ω R3 900 Ω R4 680 Ω 75V R1 1200 Ω Rc R5 300 Ω 75V R1 1200 Ω R2 1480 Ω R5 300 Ω Rb

6. 75V REDRAW 75V R1 1200 Ω Rc R5 300 Ω 75V R1 1200 Ω R2 1480 Ω R5 300 Ω R3 900 Ω R4 680 Ω 75V R1 1200 Ω R2 1480 Ω R5 300 Ω Rb

7. 75V REDRAW 3 series resistor: Rt = 1200 Ω + 300 Ω + 764 Ω = 2264 Ω 75V R1 1200 Ω Rc R5 300 Ω 75V R1 1200 Ω R2 1480 Ω R5 300 Ω R3 900 Ω R4 680 Ω 75V R1 1200 Ω R2 1480 Ω R5 300 Ω Rb

8. 75V REDRAW 3 series resistor: Rt = 1200 Ω + 300 Ω + 764 Ω = 2264 Ω I t = 75V/ 2264 Ω I t = 33.1mA 75V R1 1200 Ω Rc R5 300 Ω 75V R1 1200 Ω R2 1480 Ω R5 300 Ω R3 900 Ω R4 680 Ω 75V R1 1200 Ω R2 1480 Ω R5 300 Ω Rb

9. 75V REDRAW 3 series resistor: Rt = 1200 Ω + 300 Ω + 764 Ω = 2264 Ω I t = 75V/ 2264 Ω I t = 33.1mA DRAW THIS IN 75V R1 1200 Ω Rc R5 300 Ω 75V R1 1200 Ω R2 1480 Ω R5 300 Ω R3 900 Ω R4 680 Ω 75V R1 1200 Ω R2 1480 Ω R5 300 Ω Rb 33.1mA 33.1mA 33.1mA

10. Work out voltdrops VR1 = I x R = 33.1mA x 1200 Ω = 39.7V 75V R1 1200 Ω Rc R5 300 Ω 75V R1 1200 Ω R2 1480 Ω R5 300 Ω R3 900 Ω R4 680 Ω 75V R1 1200 Ω R2 1480 Ω R5 300 Ω Rb 33.1mA 33.1mA 33.1mA

11. Work out voltdrops VR1 = I x R = 33.1mA x 1200 Ω = 39.7V VR5 = I x R = 33.1mA x 300 Ω = 9.93V 75V R1 1200 Ω Rc R5 300 Ω 75V R1 1200 Ω R2 1480 Ω R5 300 Ω R3 900 Ω R4 680 Ω 75V R1 1200 Ω R2 1480 Ω R5 300 Ω Rb 33.1mA 33.1mA 33.1mA

12. Work out voltdrops VR1 = I x R = 33.1mA x 1200 Ω = 39.7V VR5 = I x R = 33.1mA x 300 Ω = 9.93V VRc = I x R = 33.1mA x 764 Ω = 25.28V 75V R1 1200 Ω Rc R5 300 Ω 75V R1 1200 Ω R2 1480 Ω R5 300 Ω R3 900 Ω R4 680 Ω 75V R1 1200 Ω R2 1480 Ω R5 300 Ω Rb 33.1mA 33.1mA 33.1mA

13. Work out voltdrops VR1 = I x R = 33.1mA x 1200 Ω = 39.7V VR5 = I x R = 33.1mA x 300 Ω = 9.93V VRc = I x R = 33.1mA x 764 Ω = 25.28V DRAW THESE IN ! 75V R1 1200 Ω Rc R5 300 Ω 25.28V 9.93V 39.7V 39.7V 9.93V 39.7V 9.93V 25.28V 25.28V 25.28V 75V R1 1200 Ω R2 1480 Ω R5 300 Ω R3 900 Ω R4 680 Ω 75V R1 1200 Ω R2 1480 Ω R5 300 Ω Rb 33.1mA 33.1mA 33.1mA

14. Work out Branch Currents IR2 = V/R = 25.28V/ 1480 Ω = 17.4mA IRb = V/R = 25.28V/ 1580 Ω = 16mA 75V R1 1200 Ω Rc R5 300 Ω 25.28V 9.93V 39.7V 39.7V 9.93V 39.7V 9.93V 25.28V 25.28V 25.28V 75V R1 1200 Ω R2 1480 Ω R5 300 Ω R3 900 Ω R4 680 Ω 75V R1 1200 Ω R2 1480 Ω R5 300 Ω Rb 33.1mA 33.1mA 33.1mA

15. Work out Branch Currents IR2 = V/R = 25.28V/ 1480 Ω = 17.4mA IRb = V/R = 25.28V/ 1580 Ω = 16mA DRAW THESE IN 75V R1 1200 Ω Rc R5 300 Ω 25.28V 9.93V 39.7V 39.7V 9.93V 39.7V 9.93V 25.28V 25.28V 25.28V 75V R1 1200 Ω R2 1480 Ω R5 300 Ω R3 900 Ω R4 680 Ω 75V R1 1200 Ω R2 1480 Ω R5 300 Ω Rb 33.1mA 33.1mA 33.1mA 16mA 16mA 17.4mA 17.4mA

16. We can Work out last 2 voltdrops VR3 = I x R = 16mA x 900 Ω = 14.4V VR4 = I x R = 16mA x 680 Ω = 10.8V 75V R1 1200 Ω Rc R5 300 Ω 25.28V 9.93V 39.7V 39.7V 9.93V 39.7V 9.93V 25.28V 25.28V 25.28V 75V R1 1200 Ω R2 1480 Ω R5 300 Ω R3 900 Ω R4 680 Ω 75V R1 1200 Ω R2 1480 Ω R5 300 Ω Rb 33.1mA 33.1mA 33.1mA 16mA 16mA 17.4mA 17.4mA

17. We can Work out last 2 voltdrops VR3 = I x R = 16mA x 900 Ω = 14.4V VR4 = I x R = 16mA x 680 Ω = 10.8V DRAW THESE IN 75V R1 1200 Ω Rc R5 300 Ω 25.28V 9.93V 39.7V 39.7V 9.93V 39.7V 9.93V 25.28V 25.28V 25.28V 14.4V 10.8V 75V R1 1200 Ω R2 1480 Ω R5 300 Ω R3 900 Ω R4 680 Ω 75V R1 1200 Ω R2 1480 Ω R5 300 Ω Rb 33.1mA 33.1mA 33.1mA 16mA 16mA 17.4mA 17.4mA