5F20.40 - Wheatstone Bridge

Code Number:
Demo Title:
Wheatstone Bridge
Determination of Unknown Resistance
Area of Study:
Electricity & Magnetism
Wheatstone Bridge Demo Unit, Lecture Bench Galvanometer.

Plug in the power supply that is mounted on the demo unit. Choose one of the unknown resistances and put it into the circuit. By adjusting the resistor box to the proper values and finding the place on the slide wire where the galvanometer read no deflection the exact resistance of the unknown or approximate resistor may be determined.

  • Thomas B. Greenslade Jr., "A Different Sort of Wheatstone Bridge Experiment", TPT, Vol. 52, # 6, Sept. 2014, p. 326.
  • Erich Landstrom, "The Proof is in the Picture", TPT, Vol. 48, # 5, May 2010, p. 278.
  • "Figuring Physics", TPT, Vol. 48, # 3, Mar. 2010.
  • Thomas B. Greenslade Jr., "Wheatstone's Bridge", TPT, Vol. 43, # 1, Jan. 2005, p. 18.
  • Thomas B. Greenslade Jr. "The Hydraulic Analogy for Electric Current", TPT, Vol. 41, # 8,  Nov. 2003, p. 464.
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  • Eg-6:  Freier and Anderson,  A Demonstration Handbook for Physics.
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  • Walter C. Michels,  "3.2, The Wheatstone Bridge",  Electrical Measurements and Their Applications, p. 56 - 64.
  • Neil A. Downie, "Six-Wire Telegraph",  Ink Sandwiches, Electric Worms and 37 Other Experiments for Saturday Science, p. 264.
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  • D. Colson, C. J. Lapp, J. A. Eldridge, "Experiment LXII", 1936 Univ. of Iowa Physics Laboratory Manual, p. 62.
  • Forrest M. Mims III, "Wheatstone Bridge", Vol. IV - Electronic Formulas, Symbols & Circuits, p. 103.

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