Скачать или смотреть Chapter 3 part 1 Electric Current and DC Circuits - Electrical Conduction & Resistivity

At the end of this video, you should be able to (Learning objective):

3.0 Electric Current and Direct-Current Circuits
3.1 Electrical Conduction
a) Describe the microscopic model of current. *Emphasise on the flow of free electrons in a metal. Include the concept of drift velocity.
b) Define electric current
3.2 Ohm's law and resistivity
b) Define resistivity
3.3 Variation of resistance with temperature
a) Explain the effect of temperature on electrical resistance in metals

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