Find the value of the internal resistance

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Reference no: EM131295186

Ideally, a voltmeter has infinite internal resistance and can be placed across any device to read the voltage without affecting the result. A particular digital multimeter (DMM), a common laboratory tool, is connected across the circuit shown in Figure.

The expected voltage was 10.2 V. However, the DMM reads 7.61 V.

The large, but finite, internal resistance of the DMM was "loading" the circuit and causing a wrong measurement to be made. Find the value of the internal resistance R_Mof this DMM.

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Reference no: EM131295186

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