Mobility Definition

Question

Mobility μ of charge carriers defined as?

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1. **Definition**: Mobility ($\mu$) is a measure of how easily a charge carrier (electron or hole) moves through a material when subjected to an electric field.
2. **Formula**: **$\mu = \frac{v_d}{E}$**, where $v_d$ is the magnitude of drift velocity and $E$ is the electric field strength.
3. **Units**: $	ext{m}^2 	ext{V}^{-1} 	ext{s}^{-1}$.
4. **Insights**: 
   - Electrons generally have significantly higher mobility than holes in the same material.
   - High mobility is desirable for high-speed electronic devices.

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Mobility Definition

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