Which symbol in figure G7-1 represents an NPN junction transistor?

Q: Which symbol in figure G7-1 represents an NPN junction transistor?

The correct answer is B: Symbol 2. The correct answer is B: Symbol 2. The symbol in figure G7-1 that represents an NPN junction transistor is Symbol 2. NPN transistor symbols show the emitter arrow pointing outward (away from base), indicating NPN construction. For amateur radio operators, this is important for reading circuit diagrams. Understanding this helps when working with transistor circuits.

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Deep Dive: G7A11

The correct answer is B: Symbol 2. The symbol in figure G7-1 that represents an NPN junction transistor is Symbol 2. NPN transistor symbols show the emitter arrow pointing outward (away from base), indicating NPN construction. For amateur radio operators, this is important for reading circuit diagrams. Understanding this helps when working with transistor circuits.

Why Other Answers Are Wrong

Option A (Symbol 1): Incorrect. Symbol 1 represents a FET, not an NPN transistor. FETs and bipolar transistors have different symbols. Option C (Symbol 7): Incorrect. Symbol 7 represents a different component - likely a tapped inductor or other device, not an NPN transistor. NPNs have distinct symbols. Option D (Symbol 11): Incorrect. Symbol 11 represents a different component - likely another device, not an NPN transistor. NPNs have distinct symbols.

Exam Tip

NPN transistor symbol = Symbol 2. Think 'N'PN = 'N'ot pointing 'I'n = 'S'ymbol '2'. NPN transistor symbols show emitter arrow pointing outward (away from base). Not Symbol 1 (FET), not Symbol 7, not Symbol 11 - just Symbol 2.

Memory Aid

NPN transistor symbol = Symbol 2. Think 'N'PN = 'S'ymbol '2'. NPN transistor symbols show emitter arrow pointing outward (away from base). Standard NPN symbol representation.

Real-World Example

You read a circuit diagram. Symbol 2 shows an NPN transistor with the emitter arrow pointing outward (away from the base). This arrow direction indicates NPN construction (N-P-N). This is how NPN transistors are represented in circuit diagrams.

Source & Coverage

Question Pool: 2023-2027 Question Pool

Subelement: G7A

Reference: 2023-2027 Question Pool · G7 - Practical Circuits

Key Concepts

NPN transistor Circuit symbols Symbol 2 Transistor symbol

Official Pool Source

Question text and answer key are synchronized with the current NCVEC General Class pool and mapped to the G7A topic.