The Electronics Information part of the ASVAB/AFCT deal with electricity, radio principles, and electronics.
20 questions in 9 minutes
This test covers the principles of electricity and electronics. Most of the questions fall into one of a few categories:
electromechanical induction (electrical generators and motors),
DC and AC current, and
basic electronic theory.
Commercially available ASVAB/AFCT study guides are the best way to prepare for this test.