Content preview from Engineering PhysicsMultiple choice questions
- Metals possess: ( )
- high electrical and thermal conductivities
- obey Ohm’s law
- at high temperatures, resistivity is proportional to temperature
- all
- According to classical free electron theory, ( )
- there is no interaction between conduction electrons
- the interaction of free electrons with ion cores is negligible
- the free electrons find uniform electric field of positive ions and that of electrons in metal
- all
- At absolute temperature T K, the root mean square velocity (
) of an electron of mass ‘m’ is [KB = Boltzmann constant] ( )
- If τx is the relaxation time of an electron of mass ‘m’ moving along ...
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ISBN: 9788131775073