For a circuit similar to the one shown in Problem 2-1, R 1 5 1.00 k , R 2 5 2.00 k , R 3 5 4.00 k ,.

For a circuit similar to the one shown in Problem 2-1, R1
5 1.00 k, R2 5 2.00 k,
R3 5 4.00 k, and  a
5 24.0 . A voltmeter was placed across
contacts 2 and 4. Calculate the relative error in the voltage reading if the
internal resistance of the voltmeter was (a) 4000 ,
(b) 80.0 k, and (c) 1.00 MV.

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A voltmeter was used to measure the voltage of a cell with
an internal resistance of 1.00 kV. What must the internal resistance of the
meter be if the relative error in the measurement is to be less than (a) 21.0%,
(b) 20.10%?

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