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Which is an example of PN junction diode?
- a)Light Emitting Diode
- b)Light dependent resistor
- c)Photo Voltaic cell
- d)Capacitor
Correct answer is option 'A'. Can you explain this answer?
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Which is an example of PN junction diode?a)Light Emitting Diodeb)Light...
PN Junction Diode
The correct example of a PN junction diode is a Light Emitting Diode (LED). Let's understand why LED fits the criteria of a PN junction diode:
What is a PN Junction Diode?
A PN junction diode is a semiconductor device that allows the flow of electric current in one direction while blocking it in the opposite direction. It is formed by joining a P-type semiconductor with an N-type semiconductor.
Light Emitting Diode (LED)
- An LED is a semiconductor device that emits light when an electric current passes through it.
- It consists of a PN junction, where the P-type and N-type semiconductors are brought together to create a depletion region.
- When a forward bias voltage is applied to the LED, electrons and holes recombine in the depletion region, releasing energy in the form of light.
- LED is a common example of a PN junction diode as it exhibits the characteristic behavior of allowing current flow in one direction while emitting light.
In conclusion, a Light Emitting Diode (LED) is a prime example of a PN junction diode due to its construction and functionality in emitting light when current flows through it in the forward bias direction.
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Which is an example of PN junction diode?a)Light Emitting Diodeb)Light...
Light Emitting Diode (LED) is an example of PN junction diode. A layer of Phosphor is added at the junction who is responsible for the glow. Phosphor is a substance that exhibits the phenomenon of luminescence.
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