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The circuit shown here is used to measur...

The circuit shown here is used to measure resitance R. An ammeter shows a current of 2A and a voltmeter of a potential difference of 120 V. what is the resitance R if the internal resistance of the voltmeter is `R_(v)` = 3000`Omega`?
How large will the error in measuring R be, if the resistance of the voltmeter is assumed to be infinitely large?

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