Why is there no current in the right loop of this circuit?

[flyingpig]

Homework Statement

http://apcentral.collegeboard.com/apc/public/repository/ap08_physics_c_em_frq.pdf

Go to problem 2 with the circuits. Go to a) ii) for the inductor.

It says the loop on the right have no current driving through, why?

Solutions
http://apcentral.collegeboard.com/apc/public/repository/ap08_physics_c_em_frq.pdf

 

[Quinzio]

Because for any inductor the current is an integral:
$$i = \int_{t_0}^{t}\frac{v(t)}{L}\ dt + i(t_0)$$

Immediately after the switch S closes mean that $$t = t_0$$, so the current is zero.

$$i(t_0)$$ is zero since before that moment the switch was open.

 

[flyingpig]

I don't understand still...