PIRA 5A40.00 INDUCED CHARGE

DCS #DEMONSTRATIONREFERENCEABSTRACT
5A40.00Induced Charge
5A40.10charging by inductionPIRA 200Charging by induction using two balls on stands with an electroscope for a charge indicator.
5A40.10charging by inductionE-1gCharging by induction using two balls on stands.
5A40.10electrostatic inductionDisc 17-01Use two metal spheres, a charged rod, and an electroscope. Animation shows charges.
5A40.12induced chargeE-9Use electroscopes and proof planes to show charging by induction.
5A40.13methods of electrostatic inductionEa-16Various forms of conductors are separated in an electric field.
5A40.15electroscope charging by inductionPIRA 1000
5A40.15electroscope charging by induction5A40.15Use conductors on the top of two electroscopes that can be brought into contact to demonstrate charging by induction.
5A40.15induction chargingEa-11Large metal bars on two electroscopes are apart when charging by induction.
5A40.16charging electroscope by inductionTPT 3(1),29Touch the plate of an electroscope while holding a charged rod nearby. Next month may contain answers to impertinent questions raised by high school students.
5A40.16charging electroscope by inductionTPT 3(4),185Answer to the question of an earlier Physics Teacher. Diagrams show how an electroscope is charged when touched while a charged rod is brought near.
5A40.16charging electroscope by inductionE-23Charge an electroscope by touching while holding a charged rod near.
5A40.17electrostatic charging by inductionE-8Pith balls touching both ends of a conductor are charged when a charged rod is brought toward one end. Use another test charge to show the polarity at each end.
5A40.20can attracted to charged rodPIRA 200A hoop of light aluminum is attracted to a charged rod.
5A40.20charge propelled cylinder5A40.20
5A40.20can attracted to charged rodEa-15A hoop of light aluminum is attracted to a charged rod.
5A40.23charged ball attracted to ground29-1.15A metalized ball is attracted to a grounded aluminum sheet when a charge is applied to the ball.
5A40.23suspended electrophorus discE-11Raise an electrophorus. disc off the plate with a helical spring, touch the disc to remove induced charge, and show the spring lengthens.
5A40.24blow soap bubbles at Van de GraaffAJP 44(6),606Blow neutral soap bubbles at a Van de Graaff generator for intriguing induction effects. Try double bubbles.
5A40.25paper sticks on boardPIRA 1000
5A40.25paper sticks on the boardE-15Hold a piece of paper on a slate blackboard and rub it with fur.
5A40.25rub paperE-5bRub paper with cat fur while holding it on the board.
5A40.26familiarity breeds contemptE-6Cork filings are first attracted to a charged rod by induced charge, then repelled as they become charged by conduction.
5A40.302" x 4"PIRA 500
5A40.302" x 4"5A40.30Induced charge is used to move a 2x4 balanced on a watch glass.
5A40.30conductivity of a "two by four"Ea-17Rotate a 2x4 by bringing a charged rod close.
5A40.30wooden needleDisc 17-06The "needle" is a six foot 2X4.
5A40.35metal rod attractionPIRA 500
5A40.35metal rod attractionDisc 17-02Place a metal rod on a pivot and show attraction to both positive and negative charged rods.
5A40.36forces between electrodesEc-5A ball on a flexible rod is attracted to an electrostatic generator by the induced charge.
5A40.40deflection of a stream of waterPIRA 500
5A40.40deflection of a stream of water5A40.40A charged rod deflects a stream of water.
5A40.40deflection of a water streamEa-12A charged rod is held near a stream water flowing from a nozzle.
5A40.42deflection of water streamE-41At different ranges the water stream 1) the jet is smooth from nozzle to sink, 2) is attracted to the rod, 3) breaks up into small drops.
5A40.43Raleigh fountainEa-13A charged rod held near a stream of water directed upward breaks it into drops.
5A40.60electrostatic generator principlesPIRA 1000
5A40.60electrostatic generator principles5A40.60Same as AJP 37(10),1067.
5A40.60electrostatic generator principlesAJP 37(2),225Manipulate two metal cans and move a metal ball back and forth to show how charging by induction and charge transfers build up charge.
5A40.60electrostatic generator principlesAJP 37(10),1067Two cans and two balls and cross your hands.
5A40.70Kelvin water dropperPIRA 500
5A40.70Kelvin water dropper5A40.70Sparks are produced by falling water.
5A40.70Kelvin water dropperEa-14Sparks are produced by water falling through two rings connected by an "x" arrangement to opposite receivers.
5A40.70Kelvin water dropper29-1.24A simple Kelvin water dropper made with shower heads enclosed in cans. Diagram.
5A40.70Kelvin water dropper29-1.23Explanation of and directions for building a Kelvin water dropper. Picture, construction details in appendix, p.1311.
5A40.70Kelvin water dropperE-25A diagram and some construction details are given for the Kelvin water dropper. A "dry water dropper" using steel balls is mentioned.
5A40.70Kelvin water dropperDisc 17-05A Kelvin water dropper discharges a small neon lamp. Animation sequence shows principles of operation.
5A40.72Kelvin water dropper - acAJP 41(2),196The Kelvin water dropper is extended to multiphase, multifrequency operation by considering N streams and N cans. A five can version is shown.
5A40.73almost Kelvin water dropper29-1.22Water drops through a paraffin coated funnel into a brass cup. The funnel and cup are connected to a electroscope.

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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