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In an NPN transistor the collector current is 24 mA. If 80% of the electrons reach collector, its base current in mA is
Options
(a) 36
(b) 26
(c) 16
(d) 6
Correct Answer:
6
Explanation:
Since 80% of the electrons reach the collector, 20% only remain.
Base current = (20 / 80) x 24 = 6 mA
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Topics: Electronic Devices
(124)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- For the action of a common Base (CB) transistor, (E=emitter, B= base, C= collector)
- The area of cross-section of one limb of an U-tube is twice that of the other.
- In a mass spectrometer used for measuring the masses of ions, the ions
- Two capacitors of 10pF and 20pF are connected to 200V and 100V sources, respectively.
- An electron of mass m and a photon have same energy E. The ratio of de-Broglie
Topics: Electronic Devices (124)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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