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6) Define the Hall coefficient. Estimate magnitude of the Hall voltage for a specimen of sodium (Na)
in the form of a rod of rectangular cross-section, with dimensions 6 mm x 6 mm. The rod carries a
current of 2 A down its axis in a B of 5000 Gauss that is perpendicular to the direction of the current.
The density of Na atom is 0.968 g/cm³, and Na has an atomic mass of 22.98977 g/mol.

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