// Free practice · Navy · RAF
Free DAA Electrical Comprehension test
Eleven Electrical Comprehension questions in the format of the Defence Aptitude Assessment – circuits, symbols, voltage and current.
- 11 questions
- 7.5 minutes
- Timed
What Electrical Comprehension looks like
Electrical comprehension is one of the six DAA tests (RAF). In our practice the questions cover the basics you would meet in a school physics course: circuit symbols, series and parallel circuits, voltage, current and resistance.
Two rules solve a lot of questions: in series the voltages add up to the supply and resistances simply add; in parallel every branch gets the full voltage.
How this free test is set up
Eleven questions in seven and a half minutes – half of our practice timing of 22 questions in 15 minutes. The services do not publish exact numbers for the real test; the timing is practice.
This free test is being built.
Meanwhile, try the sample questions on the course page.
No sign-up, no e-mail. Original questions written in the format of the real test, with an explanation for every answer. Updated 23 October 2026.
More free practice
- The fastest-paced part of the DAA is in the free DAA Work Rate test.
- All six sections step by step and as a full mock are in the Defence Aptitude Assessment course.
- Preparing for a different service? Try the Army Cognitive Test (ACT) sample questions.
- Preparing for a different service? Try the SIA Door Supervisor sample questions.