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Armed Services Vocational Aptitude Battery (ASVAB) Electronics Information (EI) Flashcards
50 question-and-answer cards covering Electronics Information (EI) as it is examined in Armed Services Vocational Aptitude Battery (ASVAB). 24 of them are printed below, taken from across the deck — no signup, no paywall on the preview.
24 sample cards from the Electronics Information (EI) deck
Sampled from the end of the deck, so these are different cards from the ones shown on the syllabus page.
What happens to current in a parallel circuit?
The total current is divided among the branches; the branch currents add up to the total source current.
How do you calculate total resistance for two resistors in parallel?
Use the product-over-sum rule: R_total = (R1 × R2) / (R1 + R2).
In a parallel circuit, how does total resistance compare to the smallest resistor?
The total resistance is always less than the smallest individual resistor in the circuit.
What is a short circuit?
A short circuit is an unintended low-resistance path that lets current bypass the load, causing excessive current flow.
What is an open circuit?
An open circuit is a break in the path that stops current from flowing.
What is a resistor and what does it do?
A resistor is a component that limits or controls the amount of current flowing in a circuit by providing resistance.
What is a capacitor and what does it do?
A capacitor stores electrical charge and energy in an electric field, and can block DC while passing AC.
What is a diode and what is its main function?
A diode allows current to flow in only one direction; it is used to rectify AC into DC.
What is a transistor used for?
A transistor is a semiconductor device used to amplify signals or act as an electronic switch.
What is an inductor and what does it do?
An inductor is a coil of wire that stores energy in a magnetic field and opposes changes in current.
What is a transformer used for?
A transformer transfers AC electrical energy between circuits and steps voltage up or down via electromagnetic induction.
What is an LED?
An LED (light-emitting diode) is a diode that emits light when current flows through it in the forward direction.
What is the difference between AC and DC?
AC (alternating current) periodically reverses direction, while DC (direct current) flows in only one constant direction.
Name two common sources of DC power.
Batteries and solar cells produce direct current (DC).
What type of current is supplied by household wall outlets?
Household outlets supply alternating current (AC).
What device converts AC into DC?
A rectifier (using diodes) converts alternating current into direct current.
What is the purpose of a fuse in a circuit?
A fuse protects a circuit by melting and breaking the connection when current exceeds a safe level.
How does a circuit breaker differ from a fuse?
A circuit breaker also stops excessive current, but it can be reset and reused, whereas a fuse must be replaced after it blows.
What is the purpose of grounding in an electrical system?
Grounding provides a safe path for excess or fault current to flow into the earth, protecting people from electric shock.
In a schematic, how is a battery typically symbolized?
A battery is shown as alternating long (positive) and short (negative) parallel lines.
In US schematics, how is a resistor commonly drawn?
A resistor is drawn as a zigzag (sawtooth) line.
What does a circle with an arrow (or the letter M) inside represent in a schematic?
It represents a motor (M) or meter; a circle with 'M' is a motor and other letters like A or V indicate ammeters or voltmeters.
What is electromagnetic induction?
Electromagnetic induction is the generation of a voltage in a conductor when it experiences a changing magnetic field; it is the principle behind generators and transformers.
What happens around a wire when current flows through it, relating electricity and magnetism?
A magnetic field is created around any wire carrying electric current; this is the basis of electromagnets and electric motors.
What this deck covers
The Electronics Information (EI) deck follows the Armed Services Vocational Aptitude Battery (ASVAB) Electronics Information (EI) syllabus — 3 chapters and 9 topics — so questions land on material that is genuinely examinable rather than trivia around it. That works out to roughly 16.7 cards per chapter.
Answers are written to be recallable, not just readable — averaging about 100 characters, which is long enough to carry the reasoning and short enough to say out loud.
A deck like this earns its keep on the second and third pass. Read the syllabus first so you know the shape of the subject, then use the cards to find the specific facts that have not stuck.
Electronics Information (EI) flashcards FAQ
How many Electronics Information (EI) flashcards are in this Armed Services Vocational Aptitude Battery (ASVAB) deck?
50 cards. This page previews 24 of them, sampled evenly across the deck so you can judge the difficulty before installing anything.
Are these Armed Services Vocational Aptitude Battery (ASVAB) flashcards free?
Yes. The preview here is free to read with no signup, and the full 50-card deck is free inside the Examius app.
What do the Electronics Information (EI) cards cover?
They follow the Armed Services Vocational Aptitude Battery (ASVAB) Electronics Information (EI) syllabus — 3 chapters and 9 topics — so the questions track what is actually examinable.
How should I use these flashcards?
Read the syllabus first so you know the shape of the subject, then drill the deck. Examius schedules each card with spaced repetition, so cards you keep missing come back sooner and ones you know drift further apart.