Dëgërluwiin

Ci dëgërluwiinu ab jumtukaay lanuy man a xamee nu ndëgërloom toll.

Dëgërluwiin wi ρ bennaanu nattam mooy ohm x meetar [Ω x m], dafa aju ci ni wommatukaay bi bindoo (dijjaayam, guddaayam) waaye li ko lonkale ak Ndëgërlu gi R mooy mile mbind:

${\displaystyle \rho ={{RS} \over l}}$ 

• ρ mooy Dëgërluwiin wi ñu koy natte ohm x meetar [Ω x m];
• R mooy ndëgërlu gu benn dogu jumtukaay boo jël ñu koy natte ohm [Ω];
• l mooy guddaayu jumtukaay bi dawaan bi di jaar ñu koy natte meetar;
• S mooy dijjaayu jumtukaay bi ñu koy natte meetar kaare [m²].

Sunu wëlbëtee ci bii yamale mu jox nu nan lanuy natte ndëgërlu gu ab wommatukaay bu nu xamee guddaayam ak dijjaayam:

${\displaystyle R={\rho {L \over S}}}$ 

Dëgërluwiin gi manees na koo natte itam ak bii yamale:

${\displaystyle \rho ={E \over J}}$ 

• E mooy taraayu toolu mbëj bi, ñu koy natte volt ci meetar

• J mooy fattaayu dawaan bi, ñu koy natte ampere ci meetar kaare

ci mujjante manees na koo natte itam ak safaanu wommatiin wi:

${\displaystyle \rho ={1 \over \sigma }}$ 

• σ mooy wommatiin wi.

Dëgërluwiin gu ab wommatukaay dafay aju ci xeetu ne-ne bi ñu ko defaree.

Dëgërluwiin gu ab mbéll

Ci mbéll yi Dëgërluwiin gi dafay yokk lu tàngaay bi di gën a bari, manam a wommat dafay wàññeeku. Safaan wa su tàngaay bi wàññee koo ba àgg ci benn lim bumu manuta romb.

${\displaystyle \rho =\rho _{0}[1+\alpha (T-T_{0})]}$ 

${\displaystyle \rho }$  mooy Dëgërluwiin gi T tàngaay bi, ${\displaystyle \rho _{0}}$  mooy Dëgërluwiin gi ci tàngaayu delluwaay bi, naka-jekk benn ci ñaar yii lay doon 0° walla 20°. &alpha di ab ngungu tàngoor bu aju ci ne-ne bi.

Dëgërluwiin bu ab xaaj-wommatukaay

Dëgërluwiin gu ab xaaj-wommatukaay dafay wàññeeku lu tàngaay bi di yokk, kon lu tàngaay bi yokk ñuy gën a man a wommat. Bii digaale moo koy faramface:

${\displaystyle 1/T=A+B\ln(R)+C(\ln(R))^{3}\,}$ 

A, B ak C ay ngung yees jagleel ne-ne bi lañu.

• Wommatiinu mbëj
• Wommat wu mbëj
• Dëgërlukaay

 

wikbaatukaay am na xët wu tudd: Dëgërluwiin