1.

if the length of the conductor is doubled and the area of cross section is reduced to 1/4th of its initial what will be the effect on resistance and resistivity?​

Answer»

New RESISTANCE is 8 times the old resistance. If the length is double then the resistance would increase by 8 times. SINCE R=P*L/A (Resistivity constant) length BECOMES 2L and area becomes 1/4th. So, ALMOST the new resistance increase by 4 times.Explanation:



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