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Introduction to Electricity

Introduction to Electricity. Carolina $139.95. Materials. Included: 40 Wire leads 10 Bulbs 8 bulb holders 8 switches 8 battery holders 8 Cu, Zn, Al, Fe electrodes 4 DC ammeters 4 DC voltmeters. Not supplied: 8 D-cell batteries 4 plastic cups or beakers steel wool

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Introduction to Electricity

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  1. Introduction to Electricity Carolina $139.95

  2. Materials Included: 40 Wire leads 10 Bulbs 8 bulb holders 8 switches 8 battery holders 8 Cu, Zn, Al, Fe electrodes 4 DC ammeters 4 DC voltmeters Not supplied: 8 D-cell batteries 4 plastic cups or beakers steel wool vinegar paper towels

  3. Series vs. Parallel Circuits Series Circuits Parallel circuits Multiple paths for electricity Current varies in different parts of circuit If one of parallel loops interrupted, current still flows in other loop No current if main branch interrupted • Only one path for electricity • Current is same everywhere in circuit • If circuit interrupted anywhere, no electricity flows

  4. Voltaic Wet Cell • Oxidation-reduction reaction releases electrons at cathode • Electrons flow from cathode through wire to anode • Electrons then “jump” from anode to react with H+ in acid, forming H2 • Potential difference measured with voltmeter

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