Armed Services Vocational Aptitude Battery (ASVAB) Electronics Information (EI) Syllabus

Electronics Information (EI) syllabus — full chapter and topic list

Expand any chapter to see its topics and sub-topics. This is the whole examinable outline for Electronics Information (EI) in Armed Services Vocational Aptitude Battery (ASVAB), not a summary of it.

1. 1

   Fundamentals of Electricity

   3 topics

   • Electrical Quantities
     • Voltage, current, and resistance
     • Power and watts
     • Units and prefixes
   • Ohm's Law and Circuit Calculations
     • Applying V = IR
     • Calculating power (P = IV)
   • Conductors, Insulators, and Semiconductors
     • Properties of conductors and insulators
     • Introduction to semiconductors
2. 2

   Circuits and Components

   3 topics

   • Circuit Types
     • Series circuits
     • Parallel circuits
     • Combination circuits
   • Electronic Components
     • Resistors and color codes
     • Capacitors and inductors
     • Diodes and transistors
   • Current Types and Sources
     • AC vs. DC
     • Batteries and generators
     • Transformers
3. 3

   Electrical Safety and Applications

   3 topics

   • Safety and Protection
     • Grounding and shock prevention
     • Fuses and circuit breakers
   • Wiring and Schematic Symbols
     • Reading schematic symbols
     • Switches and relays
   • Magnetism and Electronics
     • Electromagnetic principles
     • Frequency and signal basics

Electronics Information (EI) flashcards for Armed Services Vocational Aptitude Battery (ASVAB)

18 of 50 cards from the Electronics Information (EI) deck — real questions with worked answers.

1. What is electric current, and in what unit is it measured?

   Current is the flow of electric charge (electrons) through a conductor. It is measured in amperes (amps, A).

2. What is voltage, and what unit measures it?

   Voltage is the electrical potential difference, or 'pressure,' that pushes current through a circuit. It is measured in volts (V).

3. What is resistance, and what unit measures it?

   Resistance is the opposition to the flow of current in a circuit. It is measured in ohms (Ω).

4. What is electrical power, and in what unit is it measured?

   Power is the rate at which electrical energy is used or work is done. It is measured in watts (W).

5. What unit measures electrical charge, and what symbol represents it?

   Electrical charge is measured in coulombs (C). The quantity of charge is often represented by the symbol Q.

6. What is capacitance and what unit measures it?

   Capacitance is the ability of a component to store electrical charge. It is measured in farads (F).

7. What is inductance and what unit measures it?

   Inductance is the property of a coil that opposes changes in current by storing energy in a magnetic field. It is measured in henrys (H).

8. What is frequency and what unit measures it?

   Frequency is the number of complete cycles of an AC waveform per second. It is measured in hertz (Hz).

9. State Ohm's Law in its basic form.

   Voltage equals current times resistance: V = I × R.

10. How do you solve for current using Ohm's Law?

    Current equals voltage divided by resistance: I = V / R.

11. How do you solve for resistance using Ohm's Law?

    Resistance equals voltage divided by current: R = V / I.

12. What is the basic formula for electrical power using voltage and current?

    Power equals voltage times current: P = V × I.

13. How can power be calculated using current and resistance?

    Power equals current squared times resistance: P = I² × R.

14. How can power be calculated using voltage and resistance?

    Power equals voltage squared divided by resistance: P = V² / R.

15. A circuit has 12 volts and 4 ohms of resistance. What is the current?

    Using I = V/R: 12 V ÷ 4 Ω = 3 amperes.

16. A device draws 2 amps at 120 volts. How much power does it use?

    Using P = V × I: 120 V × 2 A = 240 watts.

17. A 6-ohm resistor carries 2 amps. What is the voltage across it?

    Using V = I × R: 2 A × 6 Ω = 12 volts.

18. What is a conductor? Give two common examples.

    A conductor is a material that allows electric current to flow easily because of free electrons. Examples: copper, silver, gold, aluminum.

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