Question
Physics Question on Semiconductor electronics: materials, devices and simple circuits
Diode is used as a/an
A
rectifier
B
oscillator
C
amplifier
D
modulator
Answer
rectifier
Explanation
Solution
Diode is a device which allows to pass a current only when it is forward baised. That's why if we use one alternating voltage (Fontard bius of diode) source instead of a battery, during the negative cycles the diode will be reverse biased and will not allow the current to flow. Hence it can be used as a rectifier.