11) A wire is cut into three parts and then connected in parallel. How does its resistance
and resistivity gets affected?
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Answer: hi
Explanation: The Resistance of a substance is dependent upon Area of cross section, Material of wire, temperature, length of the wire.
However Resistivity only depends on Material and Temperature.
As after cutting the wire into 3 pieces, NEW LENGTH = L/3 and according to the formula R=rho*L/A ; new Resistance is 'initial/3' or R/3
But Resistivity remains same as temperature and material are constant.
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