They are large, produce a lot of heat, and burn out frequently (similar to old incandescent light bulbs). 4. Semiconductors
In an NPN transistor, a small base current controls a larger collector-emitter current. Answer: True – This is the amplifying action of a bipolar junction transistor (BJT). section 20.4 electronic devices worksheet answers
You might resent slogging through a worksheet, but educators design Section 20.4 to solidify concepts that will appear on standardized tests (like the AP Physics 2 exam, SAT Physics, or vocational electronics certification). They are large, produce a lot of heat,