Electrical Resistance: Apply Ohm's law to simple circuits

Build your own resistor to repair a broken radio.

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  • Description
  • Features

Join the resistance! In this simulation, you will learn how resistors affect electric current and how modifying the size of a resistor can modify its resistance. You will also get the chance to build your own circuit to repair a broken radio and contact your scientist colleagues.

Repair your radio to contact scientists in Antarctica

Your radio transmitter broke down and you will need to repair it in order to contact your fellow colleagues in Antarctica. To do this, you will need to learn how resistors work and how their resistance is modified by different parameters or by how they are wired.

Build your own circuit

You will get the chance to carry out your own experiments to see how the resistance changes when you change the length or width of a resistor. From what you’ve learned, you will have to replace the broken circuit in the radio and decide on how to create your own! Practice wiring your circuits with Labster’s new circuit tables, where you can visualize the many different resistors you can use.

Combine resistors and make the radio work

You will be able to test many different circuits and see how they work. Additionally, you will see how voltage, resistance and current are linked by using Ohm’s Law. With this knowledge and the battery you have available, you will have to decide which resistors you would need to use. Will you be able to get back into contact with your fellow scientists in Antarctica?

Get started now

Build your own resistor to repair a broken radio.

Techniques in lab
Circuit Building
Learning objectives

At the end of this simulation, you will be able to...

  • Define the concepts of resistivity and resistance
  • Explain how resitance is affected by length, width, type of material, and temperature
  • Apply Ohm’s law to simple circuits
  • Determine the effect of combining resistances in series and parallel
  • Apply the principles of charge and energy conservation to more advanced circuits
Simulation features

Length: 36
Accessibility mode: Not available
Languages: English (United States)


HS-PS3-5, HS-ETS1-2


Physics 5.3

Physics 5

Physics 5.2


9.3 Ohm’s Law, Kirchhoff’s Loop Rule (Resistors in Series and Parallel)

9.1 Definition of a Circuit

9.2 Resistivity