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प्रश्न
What does conductivity, denoted by \[\sigma\], measure?
विकल्प
The direction of random electron motion
The cross-sectional area of a conductor
How easily current flows through a material
The average time between electron collisions
MCQ
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उत्तर
Conductivity measures how easily current flows through a material. In the microscopic model, it depends on free electron density and relaxation time.
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