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Solve the following problem given below:

Problem: An 80-cm-long wire is made by welding a 4.5mm -diameter, 20-cm-long copper wire to a 4.5mm -diameter, 60-cm-long iron wire.

A- What is the resistance of the composite wire?

Answer is in m?

Please use great detail in explaining the solution. Thank you.

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Category:- Physics
Reference No.:- M91229507

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