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The I - V characteristics of an LED is:

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Important Questions on Electronic Devices Semiconductors

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JEE Main
IMPORTANT
Physics Crash Course JEE Main>Chapter 22 - Electronic Devices Semiconductors>Level 1>Q 13
A zener diode is to be used as a voltage regulator. Identify the correct set-up. 
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JEE Main
IMPORTANT
Physics Crash Course JEE Main>Chapter 22 - Electronic Devices Semiconductors>Level 1>Q 14
Zener diode is used as
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JEE Main
IMPORTANT
Physics Crash Course JEE Main>Chapter 22 - Electronic Devices Semiconductors>Level 1>Q 15
Symbol of Zener diode is
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JEE Main
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Physics Crash Course JEE Main>Chapter 22 - Electronic Devices Semiconductors>Level 1>Q 16

Find the current flowing through the zener diode if applied voltage is 17.5 V: ( Zener breakdown voltage given is 15 V )

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JEE Main
IMPORTANT
Physics Crash Course JEE Main>Chapter 22 - Electronic Devices Semiconductors>Level 1>Q 17
Which of the following is showing the characteristics of a zener diode?
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JEE Main
IMPORTANT
Physics Crash Course JEE Main>Chapter 22 - Electronic Devices Semiconductors>Level 1>Q 18

The current flowing through the zener diode in figure is

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IMPORTANT
Physics Crash Course JEE Main>Chapter 22 - Electronic Devices Semiconductors>Level 1>Q 19
In a common emitter configuration of a transistor, the voltage drop across a 500 Ω resistor in the collector circuit is 0.5 V. If the current gain is α=0.96, the base current is 16 N mA then N is :-
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JEE Main
IMPORTANT
Physics Crash Course JEE Main>Chapter 22 - Electronic Devices Semiconductors>Level 1>Q 20
In a common-emitter configuration of a transistor, the base current Ib=2 μA and β=0.9, then the value of Ic is