Discuss any questions regarding Monday's lab. Using a schematic diagram, list and explain all the symbols used in diagramming a series circuit. Define a series circuit and relate it to the circuit used in the Ohm's law lab. Using a series of examples, determine that in a series circuit the total resistance is the sum of all the resistances in the circuit. Define measuring voltage across a resistance and with a given voltage and known resistances, determine the voltage drop across each resistor and note that the total voltage in the circuit is the sum of the voltages across each resistor. Show that if the circuit is not complete, all bulbs will extinguish.

The lab was designed to determine the relationship between current and voltage with the resistance constant, and between current and resistance with the voltage held constant. Three measurements were made of each procedure, with results recorded in the data table. Two graphs were propagated from the data, one of current vs voltage and one of current vs resistance, for all 6 trials. The relationships between current and voltage and current and resistance in a circuit was derived from the results and then Ohm's law was used to verify the results of the data.

A classwork review sheet will be first used as a review. Using a setup consisting of batteries and holders, a voltmeter, an ammeter, wire connectors, and low voltage bulbs, the principles of Ohms law will be shown. The direct relationship of voltage to current was shown with resistance being constant. As the voltage increases, the current increases in a direct proportion. Resistance was now varied with voltage remaining the same, showing the inverse relationship between current and resistance. Ohms law formula was derived and a few examples to solve for unknowns given.

The class will start with a classwork review sheet to review the previous days class. A circuit will be constructed using set of batteries to change voltage, a set of light bulb resistance to adjust resistance, thin wire, a voltmeter and an ammeter. The following relationships will be studied. The affect on current (amps) when the resistance is constant and the voltage increased and the effect on current when the voltage is constant but the resistance increased. A graph will be drawn of voltage vs current. The relationship will be expanded into Ohm's law. A few problems will be solved to determine the voltage or current or resistance when 1 of the parameters are changed

Review electric field and electric charge. Discuss electric potential energy as energy formed moving a charged particle against an electric field and the electric potential as the electric potential energy/ charge, measured in volts. Discuss volts as being energy/coulomb. Use the flow of water and movement of heat energy to define movement from high to low pressure and energy. Relate both to the electric potential difference, or difference in voltage, which will cause charges to move from high to low potential difference. Define electric current as the flow of electric charge in a conductor, carried by electrons. Define amperes as the unit of current and that one ampere is one coulomb of charge/ sec. Discuss resistance to flow and that it depends on the thickness and length of wire, and that resistance reduces the current and converts some to heat energy. Write Ohms law, problems to be solved at the next meeting.

Review the definition of voltage as energy/charge. Using the transfer of heat from higher to lower, and the movement of water from a higher lever to lower, lead into the fact that charge also flows from higher charge to lower charge. The difference in charge, from high to low is the voltage difference, or potential difference. Just as in heat transfer and water motion, the flow of charge will continue until both reach a common potential. If there is no potential difference there is no flow of charge. Define electric current as the flow of electric charge in a conductor, with electrons carrying the charge through the circuit.

Review and expand the theory of gravitational potential energy (GPE) being due to the force needed to lift an object against the force of gravity a certain height. Work is done to lift the object, the more work done the greater the distance raised and the greater the GPE. Release of the object from the height will cause the GPE to convert to kinetic energy (KE). Charged objects have an electric field which travels out from the charged object in all directions. A second, smaller charged object will have potential energy (PE) by virtue of its position in an electric field. To move the smaller object closer to the larger charge of the same type, a force must be applied and work done to push it against the electric field. The electrical potential energy (EPE) is increased when work is done to move the charge against an electric field. The PE/ charge is the electric potential which is measured in units called volts.

A classwork review sheet started the class, based on the previous few days classwork. Using magnets and sketches, the magnetic field surrounding magnets is used to show a force field. The force of gravity is also discussed as a "field". Using a point of charge, the electric field is shown surrounding the point charge, with its direction depending on the charge. That the field has magnitude and direction will be explained.

Amira worked on Punnett Squares and Pedigree Charts.

Olivia had a test on refraction and lenses. The exam was about 45 minutes. The remaining time was used to review initial lessons on charges, conductivity, charging by conduction and induction and finally polarization of charges in a object