Ohm's Law Lab: Resistor, Potentiometer and Two Meters
A 21.4 V battery across a 5 kΩ potentiometer sets the voltage on a 341.88 Ω resistor. An inline ammeter reads the current and an inline voltmeter the…
Use this circuit in class: Ohm's law lab: measure V and I and find R
Teaching with circuits?
Create a classroom, give your students a circuit to build, and review what they submit. Try it free with one classroom and up to 5 students.
Try the free classroom demoHow it works
Turn the potentiometer knob and watch both displays: the V meter across the 341.88 Ω resistor shows its voltage and the A meter, in series below it, shows the current through it.
Divide the two readings at any position and you get about 342 Ω every time, which is Ohm's law (V = I × R). Plot V against I and the slope of the straight line is the resistance.
What's inside
- 1× Battery
- 1× Resistor (342 Ω)
- 1× Potentiometer
- Measured with Voltmeter/Ammeter
