Question

how can small current be tested​

Answer 1

Answer:

Small currents are typically measured with things called ammeters. I have seen picoammeters that measure small currents. We have stopped using d'arsonval meters so this looks like a school question. A galvanometer is used in a wheatstone bridge to measure resistance by checking for balance on the bridge.

Answer 2

Answer:

We use Ammeter to current be tested...

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