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प्रश्न
Why do free electrons in a metal move randomly when no electric field is present?
पर्याय
They are all accelerated in the direction of the field
They move randomly due to thermal energy
They move only because of a net current
They are fixed in the metallic lattice
MCQ
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उत्तर
Thermal energy causes free electrons in a metal to move randomly. In the absence of an electric field, their velocities point in different directions.
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