Learn by Novus · Open practice pack v1

Electrical reasoning: applied practice: open practice pack: answer key

20 untimed questions across 4 authored sections.

This is untimed educational practice for one applied skill. It is not a clinical, diagnostic, employment, or professionally recognized assessment, it does not produce a score or credential, and for the judgement and safety families it is not a substitute for your employer's own policies, training, or legal duties.

Answer key

ItemChoiceAnswer
electrical-reasoning-applied-s01-q01B3 A
electrical-reasoning-applied-s01-q02CIn parallel across the component, reading the potential difference across it
electrical-reasoning-applied-s01-q03A2300 W
electrical-reasoning-applied-s01-q04DIt halves
electrical-reasoning-applied-s01-q05CIt halves
electrical-reasoning-applied-s02-q01D18 ohm
electrical-reasoning-applied-s02-q02A3 ohm
electrical-reasoning-applied-s02-q03BThe current is the same at every point, and the supply voltage divides across the components
electrical-reasoning-applied-s02-q04CThe lamps are in series, so a break anywhere opens the only path
electrical-reasoning-applied-s02-q05AIt stays at the same brightness, because it still has the full 12 V across it
electrical-reasoning-applied-s03-q01CA fuse
electrical-reasoning-applied-s03-q02BIt allows current to flow in one direction only
electrical-reasoning-applied-s03-q03DA pair of two-way (single-pole double-throw) switches
electrical-reasoning-applied-s03-q04A12 V
electrical-reasoning-applied-s03-q05DIt blocks steady direct current, so the current in that branch falls to zero
electrical-reasoning-applied-s04-q01AA short circuit inside the appliance drawing a very large current immediately
electrical-reasoning-applied-s04-q02DA difference between the current in the line and neutral conductors, meaning current is leaking to earth
electrical-reasoning-applied-s04-q03CIsolate at the supply, lock off the isolator, and prove the circuit dead with a tester that is itself proved before and after
electrical-reasoning-applied-s04-q04BVoltage drop along the long, thin cable
electrical-reasoning-applied-s04-q05BA reading close to zero ohms; a broken conductor reads as an open circuit