Mutual inductance and magnetic feild

[abdullah khaled]

hi,
in this problem here

there's 2 perpendicular coils but in solution there's an effect of mutual inductance

why?

 

[gleem]

The effect of inductor A on inductor B is to induce a emf in B and is due to the time rate of change of the current that is flowing in A and the mutual inductance..
i.e. emf_B = - M_ABdI_a/dt

 

[marcusl]

Apparently the schematic diagram does not represent the physical layout of the inductors. It's misleading in that respect.