Electrical Comprehension

Overview

Electrical Comprehension measures whether you can reason about simple electrical circuits and devices: reading a circuit diagram, predicting what a switch does to each bulb, comparing series and parallel behaviour, applying Ohm's law and the power formulas at the V = IR level, and understanding everyday electrics — fuses, earth wires, electromagnets, motors and transformers. Most items are qualitative predict-what-happens questions; the quantitative ones need only one-step arithmetic, never engineering maths, and the distractors deliberately encode the classic misconceptions (current getting used up, batteries supplying a fixed current, parallel branches sharing equally). As tested in RAF-style aptitude batteries — the Defence Aptitude Assessment's electrical-comprehension section runs 21 GCSE-level questions in 11 minutes — and in the electricity topics of the DLR physics and technics block, you work through timed multiple-choice circuit items of increasing difficulty. This is a familiarisation and practice tool, not a validated assessment — the target scores are provisional practice anchors, not passing scores.

Assessments

Could show up in DLR-based selections.

Airline mappings are based on public information and may change.

Example: trace the circuit

Read the question and trace the circuit diagram, then pick the single option that the electricity forces to be true. The correct answer is highlighted below.