are any questions asked on thermal/chemical effects of electric curent,permanent magnets,cells,tangent galvanometer or resonance(a.c),gates,logic circuits or diodes/transistors in iitjee/aieee? if asked ,whats their weightage?thankyou for solving my previous query

In IIT there arent problems on thermal effects of current, transistors, diodes , logic gatesetc.  but in aieee 2-3 questions from these topics will be there.

You must be better prepared with these topics if u r focussed on AIEEE as these questions are easy and many students leave them as they never cover

that portion.