JEE Main 2017PhysicsSemiconductorsEasyMCQ

JEE Main 2017 — Semiconductors Question with Solution

JEE Main 2017 (09 Apr Online)

Question

The current gain of a common emitter amplifier is 69. If the emitter current is 7.0 mA, collector current is :

Choose an option

Show full solutionCorrect option: C
Correct answer
C6.9 mA

Step-by-step explanation

β=69=ICIB

α=β1+β=6970=ICIE

IC=IE×6970

IC=6970×7

IC=6.9 mA.

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About this question

This is a previous-year question from JEE Main 2017, covering the Semiconductors chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.