Задача 30667.

In the figure, the resistance of the potentiometer is 2000 Ohms, the internal resistance of the voltmeter is 5000 Ohms, U = 220 V. Determine the reading of the voltmeter if the moving contact is in the middle of the potentiometer.

Detailed solution with a brief record of the conditions, formulas and laws used in the solution, derivation of the calculation formula and answer.
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