- Recognize that Kirchhoff's Laws are applications of the Law od Conservation of Energy and the Law of Conservation of Charge.
- State Kirchhoff's First and Second Law.
- Define: series circuit, parallel circuit, equivalent resistance.
- Draw a schematic of a series and parallel circuit.
- Solve problems related to electrical circuit analysis using expressions for current, potential difference and resistance.
- Determine an equivalent resistance to replace two or more resistors in an electric circuit.
- Recognize the importance of using Ohm's Law and Kirchhoff's Laws in analyzing electric circuits.
In this unit students will increase their abilities to:
- Kirchhoff's Laws are applications of two fundamental laws: the Law of Conservation of Energy, and the Law of Conservation of Charge.
- Kirchhoff's Current Law states that at any junction in an electric circuit, the total current flowing into the junction is the same as the total current leaving the junction.
- Kirchhoff's Voltage Law states that the algebraic sum of the potential differences in a complete circuit must be zero.
- A series circuit provides only one path for electrons to flow.
- A parallel circuit provides alternate paths for current to follow.
- An equivalent resistance is a single resistance which replaces two or more resistors.
- Resistance equations were developed using Ohm's Law and Kirchhoff's Laws.
- In a series circuit current, voltage and resistance can be calculated as follows:
- In a parallel circuit current, voltage and resistance cam be calculated as follows: