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This 5 page Class Notes was uploaded by Mrs. Linda Wiegand on Friday September 18, 2015. The Class Notes belongs to PHY 2054 at University of Florida taught by Staff in Fall. Since its upload, it has received 8 views. For similar materials see /class/206766/phy-2054-university-of-florida in Physics 2 at University of Florida.
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Date Created: 09/18/15
I Current and Resistance gt ight V y A AA pulcnual R 3 la i gq B R I 2 quotK2 gt g 7 i gt u R mrr k 131 e polk nlidl A A l y g 019 39l PHYZEISA Chum117 What You Will Learn in This Chapter Nature of electric current Drift speed and current Current and voltage measurements Conductivity and resistivity Ohm s law Temperature variations of resistance Superconductors Power in electric circuits Eectrica activity in the heart PHY2054 Chapter 17 Current The electric current is defined as nt of charge pertiD 9b Amount of charge per volume 0c Amount of charge per area 0d Amount of charge 0e None of these PHY2054 Chapter 17 EMF EMF device performs work on charge carriers oConverts energy to electrical energy oMoves carriers from low potential to high potential 9 Maintains potential difference across terminals 2 Various types of EMF devices Carmiml39 l T39E39W39ZIM oBattery Electrolytic reaction eleclmde elecll nde oGenerator Magnetic field H v H oFuel cell Oxidation of fuel i oSolar cell Electromagnetic energy is oThermopile Nuclear decay I l i A l l Exampe battery oTwo electrodes different metals bu39fur39c am oImmersed in electrolyte dilute acid oOne electrode develops charge the other charge PHY2054 Chapter 17 4