osnove fizike 2 predavanje - unizg.hrplaninic/nastava/of2/... · table 25.2 temperature...
TRANSCRIPT
![Page 1: Osnove fizike 2 Predavanje - unizg.hrplaninic/nastava/OF2/... · Table 25.2 Temperature Coefficients of Resistivity (Approximate Values Near Room Temperature) 0.0043 0.00000 0.00088](https://reader034.vdocuments.net/reader034/viewer/2022042217/5ec2013c60e8894e636d5434/html5/thumbnails/1.jpg)
Mirko Planinić 1
Osnove fizike 2
Predavanje
Mirko Planinić
PMF
Osnove fizike 2
![Page 2: Osnove fizike 2 Predavanje - unizg.hrplaninic/nastava/OF2/... · Table 25.2 Temperature Coefficients of Resistivity (Approximate Values Near Room Temperature) 0.0043 0.00000 0.00088](https://reader034.vdocuments.net/reader034/viewer/2022042217/5ec2013c60e8894e636d5434/html5/thumbnails/2.jpg)
Mirko Planinić 2
Test iz struja
mean= 43,34 %
![Page 3: Osnove fizike 2 Predavanje - unizg.hrplaninic/nastava/OF2/... · Table 25.2 Temperature Coefficients of Resistivity (Approximate Values Near Room Temperature) 0.0043 0.00000 0.00088](https://reader034.vdocuments.net/reader034/viewer/2022042217/5ec2013c60e8894e636d5434/html5/thumbnails/3.jpg)
Mirko Planinić 3
Uvod
![Page 4: Osnove fizike 2 Predavanje - unizg.hrplaninic/nastava/OF2/... · Table 25.2 Temperature Coefficients of Resistivity (Approximate Values Near Room Temperature) 0.0043 0.00000 0.00088](https://reader034.vdocuments.net/reader034/viewer/2022042217/5ec2013c60e8894e636d5434/html5/thumbnails/4.jpg)
Mirko Planinić 4
Smjer struje
![Page 5: Osnove fizike 2 Predavanje - unizg.hrplaninic/nastava/OF2/... · Table 25.2 Temperature Coefficients of Resistivity (Approximate Values Near Room Temperature) 0.0043 0.00000 0.00088](https://reader034.vdocuments.net/reader034/viewer/2022042217/5ec2013c60e8894e636d5434/html5/thumbnails/5.jpg)
Mirko Planinić 5
Struja teče
![Page 6: Osnove fizike 2 Predavanje - unizg.hrplaninic/nastava/OF2/... · Table 25.2 Temperature Coefficients of Resistivity (Approximate Values Near Room Temperature) 0.0043 0.00000 0.00088](https://reader034.vdocuments.net/reader034/viewer/2022042217/5ec2013c60e8894e636d5434/html5/thumbnails/6.jpg)
Mirko Planinić 6
Konceptualno pitanje
Pretpostavite da zamijenite žicu sa žicom dvostruko većeg promjera .
Kako će to utjecati na iznos driftne brzine ako struja u žici ostane ista?
a) driftna brzina će ostati ista
b) driftna brzina će biti duplo veća
c) driftna brzina će biti četiri puta veća
d) driftna brzina će biti duplo manja
e) driftna brzina će biti četiri puta manja
![Page 7: Osnove fizike 2 Predavanje - unizg.hrplaninic/nastava/OF2/... · Table 25.2 Temperature Coefficients of Resistivity (Approximate Values Near Room Temperature) 0.0043 0.00000 0.00088](https://reader034.vdocuments.net/reader034/viewer/2022042217/5ec2013c60e8894e636d5434/html5/thumbnails/7.jpg)
Mirko Planinić 7
Otpornost je svojstvena
metalima (kao i gustoča)
![Page 8: Osnove fizike 2 Predavanje - unizg.hrplaninic/nastava/OF2/... · Table 25.2 Temperature Coefficients of Resistivity (Approximate Values Near Room Temperature) 0.0043 0.00000 0.00088](https://reader034.vdocuments.net/reader034/viewer/2022042217/5ec2013c60e8894e636d5434/html5/thumbnails/8.jpg)
Mirko Planinić 8
Otpornost i temperatura
Pokus sa zavojnicom i tekućim dušikom i
pokus s grijanjem vodiča plamenikom.
![Page 9: Osnove fizike 2 Predavanje - unizg.hrplaninic/nastava/OF2/... · Table 25.2 Temperature Coefficients of Resistivity (Approximate Values Near Room Temperature) 0.0043 0.00000 0.00088](https://reader034.vdocuments.net/reader034/viewer/2022042217/5ec2013c60e8894e636d5434/html5/thumbnails/9.jpg)
Mirko Planinić 9
Konceptualno pitanje
Održavate konstantno električno polje unutar komada poluvodiča
dok smanjujete temperaturu poluvodiča. Što će se desiti gustoći struje
u poluvodiču?
a) porasti će
b) smanjiti će se
c) ostati će ista
![Page 10: Osnove fizike 2 Predavanje - unizg.hrplaninic/nastava/OF2/... · Table 25.2 Temperature Coefficients of Resistivity (Approximate Values Near Room Temperature) 0.0043 0.00000 0.00088](https://reader034.vdocuments.net/reader034/viewer/2022042217/5ec2013c60e8894e636d5434/html5/thumbnails/10.jpg)
Mirko Planinić 10
Otpor je važno svojstvo
(kao masa)
![Page 11: Osnove fizike 2 Predavanje - unizg.hrplaninic/nastava/OF2/... · Table 25.2 Temperature Coefficients of Resistivity (Approximate Values Near Room Temperature) 0.0043 0.00000 0.00088](https://reader034.vdocuments.net/reader034/viewer/2022042217/5ec2013c60e8894e636d5434/html5/thumbnails/11.jpg)
Mirko Planinić 11
Otpornici su označeni bojama
![Page 12: Osnove fizike 2 Predavanje - unizg.hrplaninic/nastava/OF2/... · Table 25.2 Temperature Coefficients of Resistivity (Approximate Values Near Room Temperature) 0.0043 0.00000 0.00088](https://reader034.vdocuments.net/reader034/viewer/2022042217/5ec2013c60e8894e636d5434/html5/thumbnails/12.jpg)
Mirko Planinić 12
Odnos struje i napona
![Page 13: Osnove fizike 2 Predavanje - unizg.hrplaninic/nastava/OF2/... · Table 25.2 Temperature Coefficients of Resistivity (Approximate Values Near Room Temperature) 0.0043 0.00000 0.00088](https://reader034.vdocuments.net/reader034/viewer/2022042217/5ec2013c60e8894e636d5434/html5/thumbnails/13.jpg)
Mirko Planinić 13
Računanje otpora cilindričnog vodiča
kojim struja ide radijalno