Entry Test MCQ :: Measurements

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Which one is the derived quantity in SI units?

[A].	electric current	[B].	electric charge
[C].	plane angle	[D].	amount of substance

Answer: Option B

Ahmad said:

Plane angle is also derived quantity . true ?????

Syed Zeeshan Haider said:

derived quantities are those which formed by more than two base quantities... Plane angle=θ=S/r=(1 r)/r=meter/meter=so taken as radian, so not consider a derived q