Code Number: 5H40.10
Demo Title: Jumping Wires
Condition: Excellent
Principle: Magnetic Fields Around Current Carrying Wires
Area of Study: Electricity & Magnetism
Equipment:
Jumping Wires and 12 V Car Battery.
Procedure:
Plug the jumping wires unit into the 12 volt car battery. Depending upon the direction of the current the wires will either come together or spring apart when the key switch is pushed.
CAUTION: Do not hold down on the key switch for more than 2 or 3 seconds at a time as the small wires that this demonstration uses will start to melt.
References:
- Elisha Huggins, "Author Response", TPT, Vol. 46, #1, Jan. 2008, p. 5.
- Herbert Looser, "Lorentz Transformation and Charge Conservation", TPT, Vol. 46, #1, Jan. 2008, p. 4.
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- R. G. Piccioni, "Special Relativity and Magnetism in an Introductory Physics Course", TPT, Vol. 45, #3, Mar. 2007, p. 152.
- James J. D'Amario and Salvatore J. Rodano, "Displaying Magnetic Forces Produced by Currents [Phys. Teach. 10(6), 340 (1972)]", TPT Vol. 41, #5, May 2003, p. 307.
- Blane Baker, "Demonstrating Forces Between Parallel Wires", TPT, Vol. 38, #5, May 2000, p. 299.
- R. C. Nicklin, "Force Between Parallel Current on the Overhead Projector", TPT, Vol. 16, #6, Sept. 1978, p. 402, also A Potpourri of Physics Teaching Ideas - Electricity and Magnetism, p. 144.
- James J. D'Amario and Salvatore J. Rodano, "Displaying Magnetic Forces Produced by Currents", TPT Vol. 10, #6, Sept. 1972, p. 340.
- H. W. Dosso and R. H. Vidal, "Magnetic Field Demonstrations", AJP, Vol. 31, #1, Jan. 1963, p. 59.
- "B-120. Slinky Spring", DICK and RAE Physics Demo Notebook, 1993.
- G. D. Freier and F. J. Anderson, "Ei-1", A Demonstration Handbook for Physics.
- Martin C. Sagendorf, "Magnetic Field Between Two Flat Helical Coils", Physics Demonstration Apparatus, 2009, p. 63.
- George M. Hopkins', "Parallel Wires", Experimental Science, Vol. 2, p. 116.
- David Kutliroff, "86. Attracting and Repelling Current-Carrying Parallel Conductors from Each Other", 101 Classroom Demonstrations and Experiment For Teaching Physics, p. 191.
- Borislaw Bilash II and David Maiullo, "Forces Between Wires", A Demo a Day: A Year of Physics Demonstrations, p. 295.
- Christopher P. Jargodzki and Franklin Potter, "181. Parallel Currents I", Mad About Physics, p. 69, 211.
- "Circles of Magnetism IV", Exploratorium Science Snackbook, p. 23.1 - 23.2.
- Robert Ehrlich, "M.1. Force Between Two Coils", Turning the World Inside Out and 174 Other Simple Physics Demonstrations, p. 156 - 157.
- Borislaw Bilash II, “Magnetic Levitation“, A Demo A Day – A Year of Physical Science Demonstrations, p. 296.