Deep Dive: E5D12
The correct answer is D: Wattless, nonproductive power. What is reactive power is wattless, nonproductive power. Reactive power doesn't do real work. For amateur radio operators, this is important for power theory. Understanding this helps when calculating power.
Why Other Answers Are Wrong
Option A: Incorrect. Power consumed in circuit Q isn't reactive power - reactive power is wattless, nonproductive. Circuit Q isn't the definition. Option B: Incorrect. Power consumed by inductor's wire resistance isn't reactive power - that's real power. Wire resistance isn't reactive power. Option C: Incorrect. Power consumed in inductors and capacitors isn't accurate - reactive power is wattless, doesn't consume power. Consumed isn't accurate.
Exam Tip
Reactive power = wattless, nonproductive power. Think 'R'eactive 'P'ower = 'R'eturns 'P'eriodically (wattless). Reactive power doesn't do real work. Not circuit Q, not wire resistance, not consumed - just wattless, nonproductive.
Memory Aid
Reactive power = wattless, nonproductive power. Think 'R'eactive 'P'ower = 'W'attless. Reactive power doesn't do real work. Important for power theory.
Real-World Example
Reactive power: It's wattless, nonproductive power. Reactive power oscillates between the source and load but doesn't do real work or consume energy. This is what reactive power is - wattless, nonproductive power.
Source & Coverage
Question Pool: 2024-2028 Question Pool
Subelement: E5D
Reference: 2024-2028 Question Pool · E5 - Electrical Principles
Key Concepts
Verified Content
Question from the official FCC Extra Class pool. Explanation reviewed by licensed amateur radio operators and mapped to the E5D topic.