Question:
Write the equation for the relationship between specific conductivity (\( \sigma \)) and drift velocity (\( v_d \)).
Write the equation for the relationship between specific conductivity (\( \sigma \)) and drift velocity (\( v_d \)).
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The drift velocity of charge carriers is proportional to the current and the specific conductivity of the material.
Updated On: Mar 3, 2025
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Solution and Explanation
Specific conductivity (\( \sigma \)) is related to the drift velocity (\( v_d \)) by the equation:
\[
\sigma = nq v_d A,
\]
where:
- \( n \) is the number density of charge carriers,
- \( q \) is the charge of the carriers,
- \( A \) is the cross-sectional area of the conductor.
- \( n \) is the number density of charge carriers,
- \( q \) is the charge of the carriers,
- \( A \) is the cross-sectional area of the conductor.
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