Question about resistors in Parallel

AI Thread Summary
The discussion focuses on demonstrating that total resistance decreases when adding identical resistors in parallel. The mathematical formula for total resistance is provided, showing that with two 20 Ω resistors, the total resistance is 10 Ω, and with three, it drops to approximately 6.7 Ω. The user is seeking assistance in devising a practical experiment to illustrate this concept effectively. Previous experiments on parallel resistance are referenced, indicating that similar projects have been conducted before. The conversation emphasizes the need for a clear experimental setup to validate the theoretical findings.
4evanaday
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Homework Statement


I need to devise an experiment to show that the total resistance decreases as additional resistors are added to a parallel circuit of resistors. All resistances of the resistors are the same.


Homework Equations


R(Total)=1/R(1)+1/R(2)+...+1/R(n)


The Attempt at a Solution


So far I can work it out mathematically say the resistance of the resistors is 20 Ω

For two resistors:
R(Total)=10 Ω
For three:
R(Total)≈6.7

So I can confirm that the total resistance of the circuit is increasing but I'm having problems devising the experiment.

Thanks in advance! :D
 
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