AP EAPCET 2024 - 21th May Evening Shift | Semiconductor Devices and Logic Gates Question 8 | Physics

In $n-p-n$ transistor circuit, the collector current is 10 mA . If $95 \%$ of the electrons emitted reach the collector, then the base current is nearly

5.3 mA

53 mA

35 mA

0.53 mA

AP EAPCET 2024 - 21th May Morning Shift

MCQ (Single Correct Answer)

-0

The semiconductor used for fabrication of visible LEDS must at least have a band gap of

0.6 eV

1.2 eV

1.8 eV

0.9 eV

AP EAPCET 2024 - 21th May Morning Shift

MCQ (Single Correct Answer)

-0

In a common emitter amplifier, AC current gains 40 and input resistance is $2 \mathrm{k} \Omega$. The load resistance is given as $10 \mathrm{k} \Omega$. Then, the voltage gain is

125

178

200

AP EAPCET 2024 - 20th May Evening Shift

MCQ (Single Correct Answer)

-0

The voltage gain and current gain of a transistor amplifier in common emitter configuration are respectively 150 and 50 . If the resistance in the base circuit is $850 \Omega$, then the resistance in collector circuit is

$1700 \Omega$

$2250 \Omega$

$2550 \Omega$

$3000 \Omega$

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