volume charge density of conductor

[rameshbalan]

In conductor, is the volume charge density is zero even though the conductor connected to dc battery.please explain

 

[mojtaba_led]

hi
i don't think charge carrier density is zero ! either it connected or not to a battery.of course in "conductor".
it can increase when the conductor connected to a battery with ionized electron and left valance band to conductive band.
in conductor there are a lot of charge carrier in conductive band so when it connect to a battery it cues to generate an electricity field that force the carrier charge to move in specific direction , electron: opposite of electricity field direction and hole :straight.

 

[rameshbalan]

but in "electromagnetic field theory fundamentals" by hirizogulu book.they are solving that zero volume current density for conduction current density. please explain

 

[ark5230]

Check if this attachment helps !!

 

[merry123]

Any interest,please contact with me