Ampere's circuital law states that:

Physics20251 markMCQ

(a)the line integral of a magnetic field along the boundary of the closed loop is equal to $\mu_0$ times the total current passing near the surface.
(b)the line integral of a magnetic field along the boundary of the closed loop is equal to $\mu_0$ times the total current passing through the surface.
(c)the surface integral of the magnetic field over the closed loop is equal to $\mu_0$ times the total current passing through the surface.
(d)the surface integral of the magnetic field over the closed loop is equal to $\mu_0$ times the total current passing near the surface.

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Moving charges and magnetism