The Maxwell’s four equations are written as

(i)$\oint \vec{E}. \vec{ds} = \frac{q}{ε_0}$

(ii) $\oint \vec{B}. \vec{ds}=0$

(iii) $\oint E. \vec{dl}=-\frac{d}{dt} \oint_s \vec{E}.\vec{ds}$

(iv) $\oint \vec{B}.\vec{dl}=\mu_0I + \mu_0ε_0 \frac{d}{dt}\oint_s \vec{E}.\vec{ds}$

The equation which have sources of $\vec{E} \, and \, \vec{B} $ are

(i)and (iv) only