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T6C03
What is component 2 in figure T-1?

Pick an answer to check it.
Answer: B. Transistor
Component 2 in Figure T-1 is a circle with a thick bar inside and two slanted lines, one with an arrow. That is the symbol for a bipolar transistor; the arrow marks the emitter.
Tip: Circle with a bar and an arrowed lead = transistor.