Question
Physics Question on The Electrical Properties of Solids
If resistivity of copper is 1.72 × 10-8 Ω m and number of free electrons in copper is 8.5 × 1028 /m3. Find the mobility
A
4.25 × 10-3 m2 / CΩ
B
6.8 × 10-3 m2 / CΩ
C
8.5 × 10-3 m2 / CΩ
D
3.4 × 10-3 m2 / CΩ
Answer
4.25 × 10-3 m2 / CΩ
Explanation
Solution
The correct option is (A): 4.25 × 10-3 m2 / CΩ.