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the resistance of a conductor wire x of length one metre is 5 homes calculate the resistance of the wire made by a material whose length is 4 times and area of cross section is five times that of wire x |
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Answer» CASE 1 length=x area=A resistivity=row R=row×x/A=5 case 2 l=4x A=5A resistivity=row R=4/5×row×x/A =4/5x5=4 OHM |
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