PhysicsMiddle / High School

Electric Circuit Builder

Build a simple circuit using a battery, wires, switch, and bulb. Adjust voltage and resistance to observe current changes.

Battery
Bulb

I = V / R

Current: 0.75 A

Increasing voltage increases current. Increasing resistance decreases current.

Learning Objective

Understand the relationship between voltage, resistance, and current in a simple circuit.

What to Observe

Observe how current increases with voltage and decreases as resistance rises.

Teacher Notes

Use before a classroom lab to introduce Ohm's law safely.