This crap been going on for decades. I was a class mate of a black 1LT. The first two weeks of class were basic electronics. Nothing more than about the first few days of the first college course in basic electronics, E=IxR sort of stuff. Guy failed the test. Failed the make up. By reg, should have been kicked out of class. HQDA directed he be retained and pass the course since that MOS was under-strength black officers. File to be annotated “not to be assigned troop duties”. The saddest thing is he had a Electrical Engineering degree.
Probably he got confused by the use of E in Ohm's law. That's how physicists write it, we EEs use V. Physicists will tell us that E is electromotiv force and voltage is only a specific form of it in units of volts yadda yadda yadda. Cut to the chase, Einstein, we're talking voltages here, not splitting atoms! Use V!
So totally understandable that he never could recover from seeing that inferior notation :-)