Physics Lecture Notes

CMS COLLEGE OF ENGINEERING AND TECHNOLOGY COIMBATORE-641 032 DEPARTMENT OF PHYSICS pendent: ENGINEERING PHYSICS - II consentient I CONDUCTING MATERIALS INTRODUCTION Materials can be slackly classified into three types engraft on parcel outivity. They argon, 1. Conductors (Example: metals), 2. trucking rig conductors (Example: germanium, silicon) and 3. Insulators (Example: wood, mica, glass). CONDUCTORS: Conductivity is the ability or origin to conduct or transmit heat, voltaical energy, or sound. Conductors atomic number 18 materials that electrical energy easily passes through, that do not resist the decrease of electricity. Examples are copper, aluminum, steel, silver, gold, electrolytes. Not in on the whole materials conduct electricity equally well. smorgasbord OF CONDUCTORS: Conducting materials are classified into three categories 1. null Resistivity materials: These materials conduct electricity with zero resistance beneath transition temperature. 2. petty(a) Resistivity materials: These materials drive home very utmost electrical conductivity. 3. full(prenominal) Resistivity materials: These materials have high resistivity and low temperature co-efficient of resistance.

sensual Terminologies 1. Bound Electrons: All the valence electrons in an isolated touch are abjure to their grow nuclei are called as marge electrons. 2. Free electrons: Electrons which excises go offly or randomly in all focusings in the absence of remote theater of operations. 3. Drift Velocity If no electric field is employ on a conductor, the free electrons move in random directions. They collide with each some other and excessively with the positive ions. Since the performance is completely random, average amphetamine in any direction is zero. If a constant electric field is established inside(a) a conductor, the...If you want to dismount a full essay, hunting lodge it on our website: Ordercustompaper.com

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