Solving a problem in physics section 16 paragraph 90 el

Solving a problem in physics section 16 paragraph 90 el

90. With the help of ammeter resistance of 0.9 ohms, is designed to measure the maximum current of 10 A, it is necessary to measure currents up to 100 A. What is the length of the required iron wire cross-section 0.2 mm2 for the manufacture of the shunt?

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Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)