6. 0 ºC temperaturadagi mis o‘tkazgichning qarshiligini 2 marta
orttirish uchun uning temperaturasini qanchaga ko‘tarish kerak
(ºC)? Mis uchun qarshilikning termik koeffitsienti 4·10
–3
K
–1
A)250 B)600 C)400 D)300
7. 0 ºC temperaturada olingan volfram simining qarshiligini 3 marta
orttirish uchun uni qanday temperaturagacha qizitish kerak (ºC)?
Volfram uchun qarshilikning termik koeffitsienti 5·10
–3
K
–1
ga teng.
A)100 B)200 C)273 D)400
8. Toza alyuminiy simning 0 ºC temperaturadagi qarshiligi 30 Ω.
Temperatura 200 ºC bo‘lganida, bu simning qarshiligi qanday
bo‘ladi (Ω)? Alyuminiy uchun qarshilikning termik koeffitsienti
4·10
–3
K
–1
