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Hey,
For metals
The resistivity of a material is directly proportional to the temperature. With increase in temperature the free electrons in the material begins to move frequently that leads to increase in collision within the material. The increased collision increases the resistivity of the material.
For semiconductor
With increase
Hi there,
The responsible charge carriers are:
1)solid:
a) conductor- free electrons are the responsibile charge carriers for flow of current.
b) semiconductor- free electrons + holes are the responsibile charge carriers for flow of current.
c) insulator- no charge carriers is responsible for the flow of current as these
Hey there,
Ohmic conductors are the conductor that obeys ohm's law.A mettalic conductor with small current is its example .
Non-ohmic conductors are the conductor which do not obey ohm's law.
A mettalic conductor with large amount of current, a pn-junction diode are its example.
Hope it helps!
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Hey aspirant,
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Conductivity of the conductor is the reciprocal of its resistivity . It's denoted by sigma. It's S.I unit is siemens/meter.
Conductivity = 1/resistivity.
Hope this information satisfies you!
Hope you're doing well,
Conductance of the conductor is the ease with which electric charge flows through it. It is the reciprocal of resistance. It is denoted by G . It's s.i unit is mho.
Conductance (G)= 1/R .
Here R is resistance.
The current density inside the conductor at any point can be defined as amount of charges flowing per second through a unit area held normal to the direction of charges through it.
J=I/A
Where I is current and A is the area of conductor
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