Small quantities of electric currents are measured in milliampere (mA) and microamperes (μA). Which of the following unit conversions is correct?
Answer & explanation
Correct answer: option 4
Small quantities of current are expressed in milliampere (1 mA = 10–3 A) or in microampere (1 µA = 10–6 A).
An instrument called ammeter measures electric current in a circuit.