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In the experiment of calibration of voltmeter a 1 1 V standard cell gets balanced...

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In the experiment of calibration of voltmeter a 1 1 V standard cell gets balanced at 440 cm length of wire The balancing length corresponding to a potential difference between the end of a resistance comes out to be 190 cm A voltmeter shows 0 5 V for this potential difference The error in the reading of voltmeter will be 5k x 10 V Find the value of k

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