Electric current is the flow of electric charge.
Students will be able to:
Any electrical component with electrical resistance restricts the flow of electrons in a circuit and transforms electrical energy into other forms of energy. Resistors can be used to control current or to provide a specific voltage and current to other components of a circuit. The total resistance of a circuit depends on the number of individual resistors and where they are positioned.
In this lesson, students construct series and parallel circuits containing two or more resistors. They measure currents and voltages in different parts of each circuit and figure out the rules that explain these relationships.
It’s important that students use resistors with different resistance values. Using different resistors emphasizes how voltage and current changes in series and parallel circuits.
Make sure that measurements are being taken from circuits that are set up correctly. Students will test for voltage/current in the circuits and note their calculations in worksheets. Building on their knowledge from the "Ohm’s Law" lesson , students show their understanding of the relationship between current and voltage.