Sample questions

Journeyman Electrician Sample Questions

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Sample 1

A 120V circuit carries 10A. What is the apparent power?

  1. 1,200 VA
  2. 12 VA
  3. 120 VA
  4. 12,000 VA

Answer: A. For a basic single-phase calculation, volts times amps equals volt-amperes.

Sample 2

Before applying a value from an NEC table, what should be verified?

  1. Only the article number without reading its scope
  2. The table's scope, headings, units, notes, and any applicable exceptions
  3. A value remembered from a different code edition
  4. Only the largest value shown in the table

Answer: B. A table value is valid only when its scope, row, column, units, notes, and exceptions match the installation.

Sample 3

What is a branch circuit?

  1. Conductors between service equipment and the final branch-circuit overcurrent device
  2. Utility conductors delivering power to the service point
  3. The circuit conductors between the final overcurrent device and the outlets or loads served
  4. A grounding electrode conductor connecting the system to earth

Answer: C. A branch circuit is the final circuit portion between its overcurrent device and the outlets or utilization equipment it supplies.

Sample 4

What is the basic formula for power in a simple DC circuit?

  1. P = V + I
  2. P = V / I only
  3. P = I - V
  4. P = V x I

Answer: D. Power can be calculated as voltage times current in basic circuit calculations.

Sample 5

If a 240V load draws 20A, what is the apparent power?

  1. 4,800 VA
  2. 24,000 VA
  3. 260 VA
  4. 480 VA

Answer: A. 240 volts times 20 amps equals 4,800 volt-amperes.

Sample 6

Why should an NEC article's scope be read before applying its rules?

  1. The scope makes local code adoption irrelevant
  2. The scope identifies the installations and conditions the article covers
  3. The scope supplies every calculation answer without other sections
  4. The scope cancels all definitions and table notes

Answer: B. Article scope prevents a rule from being applied outside the installations it governs.

Sample 7

Why are normally non-current-carrying metal parts bonded?

  1. To replace the circuit's overcurrent protective device
  2. To make the metal parts carry normal branch-circuit return current
  3. To establish an effective fault-current path and reduce dangerous voltage differences
  4. To increase utilization voltage at connected equipment

Answer: C. Bonding joins conductive parts so fault current has an effective return path that supports operation of protective devices.

Sample 8

What should you verify before studying code-specific questions?

  1. The edition used by a neighboring jurisdiction
  2. A manufacturer's advertisement in place of adopted requirements
  3. Only the publication year printed on an unofficial summary
  4. The code edition adopted by your jurisdiction

Answer: D. Jurisdictions can adopt different code editions and local rules.

Sample 9

Which change tends to increase voltage drop in a conductor run when other conditions stay the same?

  1. Increasing conductor length or load current
  2. Increasing conductor cross-sectional area
  3. Shortening the conductor run
  4. Reducing the load current

Answer: A. Voltage drop rises with conductor resistance and current; longer runs and higher current tend to increase it.

Sample 10

Which calculation uses box volume rules?

  1. Raceway fill based on conductor areas
  2. Box fill
  3. Voltage drop based on load and conductor length
  4. Service load based on connected and demand factors

Answer: B. Box fill calculations are a common electrical exam skill.

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Definition answer for Journeyman Electrician Practice Test: Ohm's law and power basics. Includes a plain-English explanation, study move, and related practice links.

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Why does Ohm's law and power basics matter for the Journeyman Electrician Practice Test?

Why it matters answer for Journeyman Electrician Practice Test: Ohm's law and power basics. Includes a plain-English explanation, study move, and related practice links.

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