Free Journeyman Electrician Exam Questions That Helps Candidates Pass

The time period (T) is the reciprocal of frequency: T = 1/f.

For 60 Hz, T = 1/60 ≈ 1/60 second (0.0167s). This means the AC waveform completes 60 cycles per second. Journeyman electricians must understand waveforms and frequency when working with AC power systems.

In a series circuit, current remains the same through all components because there is only one path for electron flow (Ohm’s Law). However, if one resistor fails open, the circuit becomes incomplete, and current stops flowing entirely. Thus, both A (same current through all) and C (zero current if one fails open) are correct. This concept reinforces the principle that in series wiring, voltage drops are distributed across resistors, but current remains equal. Journeyman-level understanding requires applying these rules to practical installations like series control circuits, Christmas lights, or testing continuity in troubleshooting scenarios.

LED lighting provides high energy efficiency, long life, and reduced heat load. Proper installation involves sizing, voltage compatibility, and adherence to NEC Article 410. Journeyman electricians must design lighting systems to meet energy codes and provide adequate illumination.

The F-connector is widely used in video distribution (TV, cable). RJ45 is for Ethernet, RJ11 for telephone, and BNC for professional video and test equipment. Journeyman electricians installing video systems must recognize and terminate connectors correctly.

Parallel resistance formula:

1/Rt = 1/6 + 1/6 + 1/6 = 3/6 → Rt = 2Ω.

Journeyman electricians must perform resistance calculations to determine current loads and avoid undersizing conductors or overloading circuits.