A voltmeter has a switch that enables voltages to be measured with a maximum of 25.0 V or 10.0 V. For a range of voltages to 25.0 V, the switch connects a resistor of magnitude 9850 Ω in series with the galvanometer; for a range of voltages to 10.0 V, the switch connects a resistor of magnitude 3850 Ω in series with the galvanometer.
Find the coil resistance of the galvanometer and the galvanometer current that causes a full-scale deflection.

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90.0 V