STANDARD Physics Conductivity and Resistivity MCQ Question
With increase in temperature the conductivity of
metals increases and of semiconductor decreases.
semiconductors increases and of metals decreases.
in both metals and semiconductors increases.
in both metal and semiconductor decreases.
Correct Answer
Detailed Explanation
Semiconductors have a negative temperature coefficient of resistivity, meaning their resistivity decreases with an increase in temperature, leading to increased conductivity. Metals, on the other hand, have a positive temperature coefficient of resistivity, so their resistivity increases with temperature, leading to decreased conductivity.
Found an issue with this question?
Related Questions
More from
Consider a conductor of length l and cross-sectional area A. If the conductor is cut lengthwise into two identical slabs, each having a cross-sectiona...
Consider a diagram showing a rectangular slab of length \( l \) and area of cross-section \( A \). If the resistance \( R \) of the slab is given by t...
A platinum resistance thermometer has a wire at the ice point with a resistance of 5 Ω and at the steam point with a resistance of 5.23 Ω. If the resi...