PIRA 5J10.00 SELF INDUCTANCE

DCS #DEMONSTRATIONREFERENCEABSTRACT
5J10.00Self Inductance
5J10.10inductor assortmentPIRA 500
5J10.10inductor assortmentE-12aSample inductors are shown.
5J10.20back EMF - light bulbPIRA 500
5J10.20back EMF5J10.20A 20 Henry inductor energized by a 12 V battery lights a 120 V 7 1/2 W lamp when the circuit is opened.
5J10.20back EMF31-3.6When current is cut off in the primary, a meter in parallel shows an induction current in the primary.
5J10.20self inductanceE-252Open the switch of a large electromagnet with a lamp in parallel.
5J10.20inductance sparkDisc 21-01Disconnect a 6 V battery from a 2000 turn coil to get a spark, enhance with an iron core.
5J10.21back EMFE-254A 4.5 V battery lights a neon bulb when the current to an inductor is disrupted.
5J10.22neon back EMFE-253The coils of a electromagnet are connected in parallel with a neon bulb.
5J10.23neon self inductionE-12dA neon lamp across an inductor will glow on one side during charging and will flash on the other when the current is interrupted.
5J10.25inductance and the wheatstone bridgeE-255The galvanometer in a Wheatstone bridge is connected after an inductor has reach steady state or at the same time the current is started in the inductor.
5J10.26simulating ideal self-inductionAJP 58(3),278A nulling circuit compensates for the steady state current in a coil.
5J10.30back EMF - sparkPIRA 1000
5J10.30back emf sparkE-12bA one inch spark is produced when the switch of a large electromagnet is opened.
5J10.32electromagnetic inertiaE-256A spark will jump across an almost closed loop of wire rather than go around when attached to a Leyden jar.

ReferenceDescription
M-1Sutton
Ma-1Freier & Anderson
M-1dHilton
8-2.8Meiners
1A12.01University of Minnesota Handbook
AJP 52(1),85American Journal of Physics
TPT 15(5),300The Physics Teacher
Disc 01-01The Video Encyclopedia of Physics Demonstrations

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