Assessment: Fundamentals of Electronics
Answer every question, then submit to see your score and which topics to review.
Part A β Concept Questions
What does doping a semiconductor achieve?
MediumWhat is the basic function of a transistor?
MediumWhen is the output of an AND gate (with two inputs) HIGH?
MediumPart B β Formula & Application
A transistor has current gain 80 and base current 0.05 mA. Find the collector current.
MediumA transistor has collector current 6 mA and base current 0.05 mA. Find its current gain.
MediumPart C β Problem Solving
An engineer wants to create a semiconductor region with extra mobile positive "holes" as charge carriers. What should they do?
HardA security system should trigger an alarm if EITHER a window sensor OR a door sensor detects intrusion. Which logic gate matches this requirement?
HardPart D β Real-Life Application
Why can a modern smartphone processor contain billions of transistors in such a small space?
MediumHow does a transistor help amplify a weak microphone signal to drive a loudspeaker?
MediumPart E β Challenge
A transistor with Ξ² = 200 is used, but the base current is accidentally reduced to zero. What happens to the collector current?
Hard0/10 answered