$$ \phi_B = \vec{B} \cdot \vec{A} = BA \cos\theta $$ Flux through a surface: $$B$$ = magnetic field, $$A$$ = area vector magnitude, $$\theta$$ = angle between field and normal.
Question 1
List-I contains four conducting loops lying in the $$XY$$ plane, as shown in the figures. The loops are rotating about $$Z$$ axis passing through the point $$O$$ with time period $$T$$ in clockwise direction. The region $$x>0$$ contains a uniform magnetic field $$B$$ in the $$+z$$ direction. List-II contains the qualitative variation of the induced current $$i(t)$$ for each of these loops. Choose the option which describes the correct match between the entries in List-I to those in List-II.