Question

On which metal the ohom's law dose not apply?? silicone iron arsenic germenium

Answer 1

Ohm's law fails for semiconductors...Non-Ohmic behavoiur is being observed in Semiconductor as when Voltage increases in a Semiconductor , Current i remain 0 , when Voltage v keep on increasing , i then starts increasing...

For example :
when
V=0 then i = 0
V=1 then i= 0
V=2 then i=0
V=3 then i = 1
V=4 then i = 2
V=5 then i = 3
V=6 then i= 4
V=7 then i= 4
V=8 then i =4 and so on...
i just wrote here a rough readings of i and v to understand what actually i mean...
Here you can see When voltage is 0 , current i is also 0...according to ohms law current should increase as voltage increses but it is not the case as Current i remain 0...

Simillarly , when V=6 , we have i = 4 again when Voltage increases to 7 current doesnt changes...Ohms law fails here...

This consequences you would study in details in Semiconductors why we have this type sitiation arises in semiconductors....


Silicon , Arsenic and germanium are semiconductors...so Ohms law doesnt apply in these elements...