Question

Example 29 A resistance of 1980 2 is
connected in series with a voltmeter, after which
the scale division becomes 100 times larger. Find
the resistance of voltmeter.
​

Answer 1

Voltmeter is always connected in parallel to a circuit. Since Galvanometer is a very sensitive instrument, therefore it can not measure high potential difference. In order to convert a Galvanometer into voltmeter, a very high resistance known as "series resistance" is connected in series with the galvanometer.

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