Science Energy Procedural 12–13 yrs

Ohm's Law: voltage, current, resistance

欧姆定律：电压、电流、电阻

Description

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

Mastery Evidence

✓ 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 your child 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?