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प्रश्न
The light emitted in an LED is due to
विकल्प
Recombination of charge carriers
Reflection of light due to lens action
Amplification of light falling at the junction
Large current capacity
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उत्तर
Recombination of charge carriers
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संबंधित प्रश्न
Why is the base of a transistor made thin and is lightly doped?
In a common base configuration, the transistor has an emitter current of 10 mA and a collector current of 9.8 mA. The value of base current is ______
With the help of a neat circuit diagram, explain the transistor as an amplifier?
In a transistor in CE configuration, the ratio of power gain to voltage gain is ____________.
Which of the following regions of a transistors are, respectively, heavily dopped and lightly dopped?
In an npn transistor circuit, the collector current is 10 mA. If 90% of the electrons emitted reach the collector, the emitter current (IE) and base current (IB) are given by ____________.
A change of 9.0 mA in the emitter current brings a change of 8.9 mA in the collector current. The value of current gain β will be ______.
A transistor is connected in C - E mode. If collector current is 72 × 10-5 A and α = 0.96, then base current will be ______.
In common emitter amplifier, a change of 0.2 mA in the base current causes a change of 5 mA in the collector current. If input resistance is 2K `Omega` and voltage gain is 75, the load resistance used in the circuit is ______.
Explain the output characteristics of common emitter configuration of n-p-n transistor.
