# Using voltmeter only!

In the circuit above, when the switch is in position 0, the voltmeter shows a voltage of $$6V$$. When the switch is in position 1, the voltmeter shows a voltage of $$12V$$. What is the voltage (in volts) on the voltmeter when the switch is in position 2? Submit your answer to the nearest integer.


Details and Assumptions:

• The voltmeter is ideal, i.e. its internal resistance is infinitely large.
• The values of $$E, R, I$$ are unknown.
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