Question

Resistance of a conducting wire X of length 1m is 5 ohm caluclate the same material whose length is 4 times and area of cross section is 5 times that of wire X

Answer 1

Answer:

resistance = resistivity*length/area

length=l, area=a, resistivity=p

X=pl/a

R2 = 4pl/5a = ⅘pl/a = ⅘X

Explanation:

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