The coil and ammeter are connected in series and connected to a current source. A voltmeter with a resistance of r = 2 kOhm is connected to the coil terminals. The ammeter shows I = 0.25 A, the voltmeter U = 100 V. Determine the resistance of the coil. What percentage will be the error if the resistance of the voltmeter is not taken into account when determining the resistance of the coil?
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