Resistor Model - Random Walk



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 Code Number :   5D10.40  

Disclaimer:

Reprinted by permission of Dick Berg, University of Maryland, for use on this website.

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Condition :   Excellent   
Principle :   Resistor Theory and Function 
Area of Study :  Electricity & Magnetism  
Equipment :   Random Walk, Balls (Assorted Diameters).  
Procedure :   Elevate one end of the random walk unit. Roll a ball bearing down through the pegs and observe the 'resistance' to it forward motion. Different effects can be observed by using balls with varying diameters and changing the elevation of the random walk.  
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   References

Miles J. Dresser, "A Drude Resistance Simulation", TPT, Vol. 23, # 3, Mar. 1985, p. 151 - 154.

Mario Iona, "Teaching Electrical Resistance", TPT, Vol. 17, # 5, May 1979, p. 299.

Philip B. Allen, "Electrical Conductivity", TPT, Vol. 17, # 6, Sept. 1979, p. 362.

Donald Long, "Electrical Conduction in Solid", TPT, Vol.  7, # 5, May 1969, p. 264.

 

E-300:  "Bed of Nails with Steel Balls,"  DICK and RAE Physics Demo Notebook.

 

Eg-1:  Freier and Anderson,  A Demonstration Handbook for Physics.



Mail Questions and Comments to:  Dale Stille