Answer
If the angular speed of the phasors is increased, the length of the current phasor decreases.
Work Step by Step
We can write an expression for the current when an alternating emf source is connected to an inductor:
$i_L = -\frac{V_L}{\omega_d~L}~cos~\omega_d t$
We can see that as the angular speed $\omega_d$ increases, the amplitude of the current decreases.
If the angular speed of the phasors is increased, the length of the current phasor decreases.
