1.
STATEMENT-1: Bd=0\oint \vec{B}\cdot d\vec{\ell} = 0 for a closed Amperian loop of any shape, if no net charge is crossing the loop.

STATEMENT-2: Bd=μ0i\oint \vec{B}\cdot d\vec{\ell} = \mu_0 i, where ii is the current crossing the Amperian loop, according to Ampere's circuital law.