Science·Energy·procedural

Ohm's Law: voltage, current, resistance

Apply Ohm's Law (V = IR) to calculate current, voltage, or resistance in a simple circuit, and explain that resistance opposes the flow of current

Suggested ages 12–13

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Evidence of understanding

States Ohm's Law as V = IR and identifies the units for each quantity
Rearranges V = IR to find the unknown value given the other two
Explains that resistance opposes current flow and identifies factors that affect resistance (material, length, thickness)

Assessment prompt

If Ohm's Law: voltage, current, resistance doubles the resistance in a circuit while keeping the battery the same, can they predict what happens to the current and explain using the V = IR formula?

Standards alignment

MS-PS2-3US · ngss-ms

MS-PS2-3

Next Generation Science Standards (NGSS) Middle School