In which type of circuit is voltage the same across all components?
The correct answer is B: Parallel. In a parallel circuit, voltage is the same across all components. This is a fundamental characteristic of parallel circuits - all components are connected across the same voltage source, so they all have the same voltage.
In a parallel circuit, components are connected between the same two points, so they all experience the same voltage. This is different from series circuits, where voltage divides among components. The voltage across each parallel branch equals the source voltage. Understanding parallel circuits is essential for circuit analysis, power distribution, and designing circuits where components need the same voltage.
Exam Tip
Parallel circuit = Same voltage everywhere. Remember: In parallel circuits, voltage is the same across all components because they're all connected to the same voltage source.
Memory Aid
"**P**arallel = **S**ame **V**oltage (think 'P = SV')"
Real-World Application
You're setting up multiple devices in your shack, all powered by the same 12-volt power supply. When you connect them in parallel, each device receives 12 volts - the same voltage across all of them. This is why parallel connections are used for power distribution - all devices get the same voltage.
Key Concepts
Why Other Options Are Wrong
Option A: Incorrect. In series circuits, voltage divides among components - each component has a different voltage drop. The voltage is not the same across all components.
Option C: Incorrect. Resonant circuits refer to circuits that resonate at specific frequencies (like LC circuits), not a circuit type where voltage is the same across all components.
Option D: Incorrect. Branch circuits are parts of parallel circuits, but the question asks about the circuit type where voltage is the same - that's parallel circuits.
题目解析
The correct answer is B: Parallel. In a parallel circuit, voltage is the same across all components. This is a fundamental characteristic of parallel circuits - all components are connected across the same voltage source, so they all have the same voltage. In a parallel circuit, components are connected between the same two points, so they all experience the same voltage. This is different from series circuits, where voltage divides among components. The voltage across each parallel branch equals the source voltage. Understanding parallel circuits is essential for circuit analysis, power distribution, and designing circuits where components need the same voltage.
考试技巧
Parallel circuit = Same voltage everywhere. Remember: In parallel circuits, voltage is the same across all components because they're all connected to the same voltage source.
记忆口诀
**P**arallel = **S**ame **V**oltage (think 'P = SV')
实际应用示例
You're setting up multiple devices in your shack, all powered by the same 12-volt power supply. When you connect them in parallel, each device receives 12 volts - the same voltage across all of them. This is why parallel connections are used for power distribution - all devices get the same voltage.
错误选项分析
Option A: Incorrect. In series circuits, voltage divides among components - each component has a different voltage drop. The voltage is not the same across all components. Option C: Incorrect. Resonant circuits refer to circuits that resonate at specific frequencies (like LC circuits), not a circuit type where voltage is the same across all components. Option D: Incorrect. Branch circuits are parts of parallel circuits, but the question asks about the circuit type where voltage is the same - that's parallel circuits.
知识点
Parallel circuit, Voltage, Circuit fundamentals, Voltage distribution
Verified Content
Question from official FCC Technician Class question pool. Explanation reviewed by licensed amateur radio operators.