p5 - Charging Up Rods It’s all about moving electrons...

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Unformatted text preview: Charging Up Rods It’s all about moving electrons Acetate positive Polythene Negative ­ + ­ + Pol yth ene Ac eta t ­ e + + ­ Cloth Negative ­ + ­ + ­ + ­ + Cloth Positive + ­ + ­ Bringing Charges Together + + + Attract ­ ­ + ­ ­ ­ + + ­ ­ + ­ + ­ + Repel Repel The Electric Field This is a region where a charge experiences a force The field is from + to ­ Neutral Point Positive Plate Negative Plate The Gold Leaf Electroscope + + + ­ ­ ­ The Test for Charge + + + The positive rod attracts the balloon So the balloon must be negative NO The balloon is uncharged + + + Build up of negative charge on this side The Test for Charge is Repulsion ­ ­ This balloon must be negative ­ + + + This balloon must be positive Uses of Static Electricity Spraying a Car Positive Car Negative Spraygun The paint spreads out as each negative drop repels No paint is wasted as the positive car attracts the negative paint Removing Smoke from Power Station Chimnies No smoke leaves the chimney Negative Plate Positive Plate Charge up the Smoke Earthing Petrol Tankers Petrol rubbing against the pipe can build up a static charge which could cause an explosion The tanker is joined to the ground with a wire to stop a charge building up ...
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This note was uploaded on 02/12/2011 for the course PHY 2004 taught by Professor Staff during the Spring '08 term at University of Florida.

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p5 - Charging Up Rods It’s all about moving electrons...

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