Question

The resistivity of semiconductor at room temperature is between

• A. \(10^6 \text{ to } 10^8 \, \Omega \text{ cm}\)
• B. \(10^{-2} \text{ to } 10^{-5} \, \Omega \text{ cm}\)
• C. \(10^{10} \text{ to } 10^{12} \, \Omega \text{ cm}\)
• D. \(10^{-3} \text{ to } 10^6 \, \Omega \text{ cm}\)

Answer 1

The Correct Option is D

The resistivity of a semiconductor material at room temperature typically falls within a specific range. Semiconductors, like silicon (Si) and germanium (Ge), exhibit electrical conductivity between that of a conductor (like copper) and an insulator (like glass). This intermediate conductivity is what makes them useful in electronic devices.

The resistivity range for semiconductors at room temperature (approximately 20-25°C or 293-298 K) is approximately: 

10^-3 to 10⁸ Ω⋅m

Therefore, semiconductors have resistivity values spanning several orders of magnitude, influenced by factors such as the type of semiconductor, doping concentration, and temperature.