Question

If the number of electrons per unit volume for the sodium crystal is \(2.55\times10^{28}/\text{m}^3\), then the value of Hall coefficient is:

• A. \(2.45\times10^{31}\ \text{m}^3/\text{C}\)
• B. \(-2.45\times10^{-31}\ \text{m}^3/\text{C}\)
• C. \(-2.45\times10^{-10}\ \text{m}^3/\text{C}\)
• D. \(2.45\times10^{-12}\ \text{m}^3/\text{C}\)

Hint:

For electron conduction, Hall coefficient is negative: \(R_H=-\frac{1}{ne}\).

Answer 1

The Correct Option is C