Yes it was uncommon for me too. Our teacher in electronics back then did give us a multiple choice test because we asked so persistently. He wanted proof for wh

Yes it was uncommon for me too. Our teacher in electronics back then did give us a multiple choice test because we asked so persistently. He wanted proof for why the option was chosen though. I thought he was just taking the piss but for one answer I could use proof by elimination and he accepted that. That proof was probably more work than just adding up a bunch of resistors, but it was also more fun :-)