Can we increase / decrease the range of voltmeter?
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The range of an ammeter can be easily increased by adding a shunt resistance of very low value to bypass the major part of the current through the resistance path instead of ammeter. ... There is a way to decrease the range of an ammeter but it is not practically feasible.
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Explanation:
· The range of a given voltmeter can both be increased and decreased. has to be connected in series to the coil of the galvanometer. On the other hand, to decrease the range of the voltmeter, R has to be decreased. It can be done by putting a suitable resistance in parallel with the resistance .
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