Question

calculate the resistivity of the material of wire 1m, 0.4 mm is the diameter and having resistance of 2 ohm
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Answer 1

Step-by-step explanation:

resistance = 2 ohm

length of wire = 1m

area of wire = 0.4 m^2

R= PL/A

P = RA/ L

P = 2×0.4/1 = 0.8