Current Electricity

Question

The resistivity of the alloy manganin is (nearly independent of / increases) rapidly with increase of temperature.

Answer

The resistivity of alloy manganin is nearly independent of temperature.

In alloys, the atoms are arranged in a disorderly fashion and hence, they have higher resistivity. With increase in temperature, the collision or randomness of atoms increases causing a higher resitiveity which is insignificant.

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