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← ScienceWhich consequence results when surface oxidation depletes free electrons?
A)Increased electrical contact resistance forms✓
B)Increased ductility occurs in metal
C)Higher thermal conductivity is expected
D)Decreased material hardness results therefore
💡 Explanation
Increased resistance results, because depletion causes fewer charge carriers to be available to support current flow throughout the material via ohmic conduction. Therefore surface resistance increases rather than ductility changes due to oxidation.
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