Final answer:
The first step of solving a series and parallel circuit is to draw a clear circuit diagram, labeling all resistors and voltage sources. Then, identify what needs to be determined in the problem, and determine whether the resistors are in series, parallel, or a combination of both. Use the appropriate strategies for series and parallel circuits to solve for the unknowns, and finally, check whether the answers are reasonable and consistent.
Step-by-step explanation:
- Draw a clear circuit diagram, labeling all resistors and voltage sources. This step includes a list of the knowns for the problem, since they are labeled in your circuit diagram.
- Identify exactly what needs to be determined in the problem (identify the unknowns). A written list is useful.
- Determine whether resistors are in series, parallel, or a combination of both series and parallel by examining the circuit diagram.
- Use the appropriate strategies for series and parallel circuits to solve for the unknowns. There are different strategies for series and parallel circuits.
- Check whether the answers are reasonable and consistent by comparing with expected results. For example, total series resistance should be greater, whereas total parallel resistance should be smaller.