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Answer on Electric Circuits Question for abhi

Question #13208
why we cannot decrease the range of an ammeter
Expert's answer
Ammeter sensitivity is the amount of current necessary to cause full scale deflection (maximum reading) of the ammeter. The smaller the amount of current, the more "sensitive" the ammeter. For example, an ammeter with a maximum current reading of 1 milliampere would have a sensitivity of 1 milliampere, and be more sensitive than an ammeter with a maximum reading of 1 ampere and a sensitivity of 1 ampere. To decrease the range of an ammeter we need to change it's sensivity, so that's why it is impossible.

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