Question

What is the current rating of dc ammeter that we use in lab

Answer 1

Your answer is as follows

Ampere (I)

Answer 2

An ammeter (from Ampere Meter) is a measuring instrument used to measure the current in a circuit. Electric currents are measured in amperes (A), hence the name. Instruments used to measure smaller currents, in the milliampere or microampere range, are designated as milliammeters or microammeters.