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  4. The net resistance of an ammeter should be small to ensure that

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Q. The net resistance of an ammeter should be small to ensure that

AMUAMU 2015Current Electricity

Solution:

Ammeter are designed to have a small internal resistor in order to measure the current passing on its branch without actually using any of it. Usually, it has a negligible internal resistance and voltage drop which is ideal to use for measurement approximations.