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Quantities and Units - Engineering

Q1:

The number of microamperes in 2 milliamperes is

A 2 µA

B 20 µA

C 200 µA

D 2,000 µA

ANS:D - 2,000 µA

1milliA = 10^-3.
2milliA = 2*10^-3 = 0.002A,
1μA =10^-6A = 0.000001A,
So that 1A = 1000000μA,
= 0.002A * 1000000μA,
= 2000μA.