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Q. A galvanometer can be changed into an ammeter by using:

BHUBHU 2004

Solution:

An ammeter has low resistance in the circuit as it measures the strong current.
A galvanometer as such cannot be used as an ammeter because it has appreciable resistance and it can measure only a limited current corresponding to the maximum deflection on its scale.
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In practice, an ammeter is made by connecting a low resistance $ S $ in parallel with a pivoted type moving coil galvanometer $ G.S $ is known as shunt. Its value depends upon the range of the required ammeter.