wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

The temperature dependence of resistances of Cu and undoped Si in the temperature range 300400 K, is best described by

A
Linear increase for Cu, linear increase for Si.
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
Linear increase for Cu, exponential increase for Si.
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
Linear increase for Cu, exponential decrease for Si.
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D
Linear decrease for Cu, linear decrease for Si.
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is C Linear increase for Cu, exponential decrease for Si.
Resistance of a conductor increases linearly with temperature.
R=Ro(1+αΔT)

Resistance of semiconductor decreases with temperature.
Conductivity, σ=CeEG/2kT





flag
Suggest Corrections
thumbs-up
3
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Factors Affecting Resistance & How They Affect_Tackle
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon