Question

when the rotational path of the magnetic field intensity is zero, then the current in the path will be
a. 0
b. ∞
c. 1
d. 0.5

Explanation:

This question relates to Ampère's Circuital Law, which states that the closed - line integral of the magnetic field intensity \(\vec{H}\) around a closed path is equal to the current enclosed by that path (\(\oint\vec{H}\cdot d\vec{l}=I_{enclosed}\)). If the rotational path (the closed - line integral) of the magnetic field intensity is zero, it means that the current enclosed by the path is zero.

Answer:

a. 0