Solution to task 369 from Chertov´s for extramural stud

Solution to task 369 from Chertov´s for extramural stud

369. A coil with a resistance R1 = 2 kOhm and a voltmeter connected in series were connected to a network with a voltage of U = 100 V. The voltmeter reading U1 = 80 V. When the coil was replaced with another, the voltmeter showed U2 = 60 V. Determine the resistance R2 of the other coil.

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