ELECTRONIC DEVICES — Naming BJT terminals for circuit connections In basic electronics, name the three standard external terminals of a Bipolar Junction Transistor (BJT) used for biasing and circuit wiring.

Introduction / Context:
A Bipolar Junction Transistor (BJT) is a fundamental semiconductor device used for amplification and switching. To wire, bias, and analyze a BJT correctly, learners must know its three terminal names and their roles in controlling current flow.

Given Data / Assumptions:

• The device in question is a BJT, not a MOSFET or diode.
• We must identify the correct names of its external terminals.
• Standard small-signal and power BJTs share the same terminal naming convention.

Concept / Approach:
A BJT operates by controlling a large current between collector and emitter with a small base current. Therefore, the correct terminal names are emitter (E), base (B), and collector (C). These names reflect function: the emitter injects charge carriers, the base modulates or controls them, and the collector gathers the majority of the current.

Step-by-Step Solution:
Recognize device family: BJT, which is a “bipolar” device using electrons and holes.Recall standard BJT terminals → emitter, base, collector.Match to the option list and select the correct set.

Verification / Alternative check:
Check any BJT datasheet (for example, 2N2222 or BC547). The pinout explicitly labels E, B, and C and shows their ordering for the package. Circuit symbols also show three distinct terminals with the emitter arrow indicating device polarity (NPN or PNP).

Why Other Options Are Wrong:
Drain, Gate, Source — these are MOSFET terminals, not BJT.Positive, Negative, Neutral — describe polarity in power systems, not transistor terminals.Anode, Cathode, Triode — anode/cathode belong to diodes; “triode” is a vacuum tube or a generic three-element term, not a BJT terminal.Emitter, Gate, Drain — mixes BJT and MOSFET terminology.

Common Pitfalls:
Confusing BJT with MOSFET terms; swapping emitter and collector in practice (which can severely reduce gain). Always verify the package pinout before soldering or breadboarding.

Final Answer:
Emitter, Base, Collector