Electric current is the flow of electric charge.
Students will be able to:
Build a circuit to demonstrate the relationship between voltage and current.
Ohm’s Law shows the relationship between voltage and current. It’s usually shown as a mathematical relationship with the formula V = I x R, where V is voltage, I is current, and R is resistance. Resistance is the ratio of voltage to current and the formulas below allow us to calculate any one unknown value:
During group work, note the students’ abilities to build and test for resistance in a circuit. Worksheet activities allow students to show their understanding of the relationship between current and voltage and their ability to calculate an unknown value in the Ohm’s Law equation.