Can we increase or decrease the range of a given ammeter ?
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we can increase the range of given ammeter but we can't decrease the range of given ammeter
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You can increase the range of ammeter but can't decrease it. ... To increase the range of ammeter, you need to connect a shunt resistance in parallel to the branch where you want to measure the current. The ratio of resistances connected is multiplied by the shown value of ammeter to obtain the original value.
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