Question

The electrical conductivity of a metal \(\sigma\) is given by:

• A. \(\sigma=\dfrac{ne\tau}{m}\)
• B. \(\sigma=\dfrac{ne^2\tau}{m}\)
• C. \(\sigma=\dfrac{ne}{\tau m}\)
• D. \(\sigma=\dfrac{ne^2}{\tau m}\)

Hint:

In Drude theory, conductivity increases with electron concentration \(n\) and relaxation time \(\tau\).

Answer 1

The Correct Option is B