topic for what? what are your interests? what did you do last term?
this i have to say is not a topic-giving website, you need to give us some info for us to help you.
here is a topic for a case study involving electronics:
1) Reveal how the general public is obsessed with electronic gadgets and that is partially responsible for why less and less people are reading paper books.
more technical?
2) Try and prove that all electronic devices do not work as intended due to a flaw in the Bohr model of the atom.
or you could be more specific if these wont do it for you.