Bài giảng Vật liệu học - Chương 6: Electrical properties

Bài giảng Vật liệu học - Chương 6: Electrical properties cung cấp cho người học các kiến thức về Ohm’s law, energy levels of an isolated atom, conduction & electron transport, charge carriers in insulators and semiconductors, energy bands, the mass action law,... Mời các bạn cùng tham khảo.

Chapter Electrical properties  Ohm’s law CuuDuongThanCong.com https://fb.com/tailieudientucntt • Ohm's Law: V=IR voltage drop (volts = J/C) resistance (Ohms) current (amps = C/s) C = Coulomb • Resistivity, : a material property that is independent of sample size and geometry RA  l • Conductivity,    surface area of current flow current flow path length  CuuDuongThanCong.com  https://fb.com/tailieudientucntt  Which will have the greater resistance? R1  D  2D  2 D 2    2   8 D    R1 R2    2 2D  D      Analogous to flow of water in a pipe  Resistance depends on sample  geometry and size  CuuDuongThanCong.com https://fb.com/tailieudientucntt Further definitions J=E