Conducting Well And Badly 2
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This document provides an overview of electrical conductivity and resistance in materials. It explains that good conductors allow electrons to flow easily between atoms, while insulators have a high resistance and impede electron flow. Resistance is measured in ohms and depends on a material's resistivity, length, and cross-sectional area. Conductivity is the inverse of resistivity and relates to how well a material conducts electricity. The document suggests measuring resistance of wires with varying lengths and thicknesses to calculate resistivity and conductivity.
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3) According to Ohm's law, the current through a conductor is directly proportional to the applied potential difference at a constant temperature. A graph of potential difference versus current yields a straight line.
dokumen.tips_physics-investigatory-project-on-ohms-law-58f9dcf82b4f5.pptx
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My Presentation on Rc-Circuit
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Elect principles -_resistance
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The document discusses key concepts related to electrical conduction, including:
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2) How available electron energy states change from atoms to molecules to solids, and how this impacts conductivity. Band structures determine whether a material is a metal, semiconductor, or insulator.
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PHYSICS PROJECT RITWICK.pptx
1. The student conducted an experiment to determine the variation of resistivity in different materials. Resistivity was measured for aluminum wire, copper wire, iron wire, and manganin wire.
2. Calculations were shown to determine the resistivity for each material using measurements of resistance, length, thickness, and area.
3. The resistivity increased in the order of aluminum wire, copper wire, iron wire, and manganin wire respectively. This follows the known trend that metals have lower resistivity than alloys.
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