Can I add more than two branches?
Yes—toggle the third branch option to include a third resistor. For more branches duplicate the pattern in your own spreadsheet.
Step-by-step walkthrough
Use this companion guide beside the interactive calculator to make sure you understand the “why” behind every click. Each section includes the classroom explanation, student-friendly language, and quick practice prompts.
Collect the data points listed below and double-check their units. Keeping an organized “givens” list is one of the fastest ways to reduce math errors and impress exam graders.
Step 1
Enter the total supply current.
Step 2
Provide the resistances of each branch (add a third branch if required).
Step 3
Review individual branch currents and verify they sum back to the source.
Yes—toggle the third branch option to include a third resistor. For more branches duplicate the pattern in your own spreadsheet.
Each branch lists wattage so you can confirm resistor ratings before soldering.