How is battery operating time calculated?
The correct answer is C: Capacity in amp-hours divided by average current. How is battery operating time calculated is capacity in amp-hours divided by average current. Operating time = capacity / current. For amateur radio operators, this is important for battery calculations. Understanding this helps when planning battery usage.
Exam Tip
Battery operating time = capacity in amp-hours / average current. Think 'B'attery 'T'ime = 'C'apacity / 'C'urrent. Operating time = capacity / current. Not current/capacity, not current/resistance, not resistance/current - just capacity / current.
Memory Aid
"Battery operating time = capacity in amp-hours / average current. Think 'B'attery 'T'ime = 'C'apacity / 'C'urrent. Operating time = capacity / current. Important for battery calculations."
Real-World Application
Battery operating time: It's calculated as capacity in amp-hours divided by average current. For example, a 10 Ah battery with 2 A average current gives 10/2 = 5 hours. This is the calculation - capacity / current.
Key Concepts
Why Other Options Are Wrong
Option A: Incorrect. Average current divided by capacity isn't correct - operating time = capacity / current. Current/capacity is wrong.
Option B: Incorrect. Average current divided by internal resistance isn't correct - operating time = capacity / current. Current/resistance is wrong.
Option D: Incorrect. Internal resistance divided by average current isn't correct - operating time = capacity / current. Resistance/current is wrong.
题目解析
The correct answer is C: Capacity in amp-hours divided by average current. How is battery operating time calculated is capacity in amp-hours divided by average current. Operating time = capacity / current. For amateur radio operators, this is important for battery calculations. Understanding this helps when planning battery usage.
考试技巧
Battery operating time = capacity in amp-hours / average current. Think 'B'attery 'T'ime = 'C'apacity / 'C'urrent. Operating time = capacity / current. Not current/capacity, not current/resistance, not resistance/current - just capacity / current.
记忆口诀
Battery operating time = capacity in amp-hours / average current. Think 'B'attery 'T'ime = 'C'apacity / 'C'urrent. Operating time = capacity / current. Important for battery calculations.
实际应用示例
Battery operating time: It's calculated as capacity in amp-hours divided by average current. For example, a 10 Ah battery with 2 A average current gives 10/2 = 5 hours. This is the calculation - capacity / current.
错误选项分析
Option A: Incorrect. Average current divided by capacity isn't correct - operating time = capacity / current. Current/capacity is wrong. Option B: Incorrect. Average current divided by internal resistance isn't correct - operating time = capacity / current. Current/resistance is wrong. Option D: Incorrect. Internal resistance divided by average current isn't correct - operating time = capacity / current. Resistance/current is wrong.
知识点
Battery operating time, Calculated, Capacity in amp-hours, Divided by average current
Verified Content
Question from official FCC Extra Class question pool. Explanation reviewed by licensed amateur radio operators.