Question

What is the magnitude of unit vector???

Answer 1

The magnitude of a unit vector is One/Unity.

Answer 2

Hey

Magnitude of a Vector : 

$Magnitude \: of \: a \: vector \: \vec{a}= | \vec{a} |$

Which actually is :

$|\vec{a}| = \sqrt{a_x^2 +a_y^2 +a_z^2 }$

And so, Magnitude of a unit vector is :

$| \hat{i} | = \sqrt{1^2 +0^2 + 0^2}=1$

And similarly for other n - directions !!