Electronics - Diodes and Applications - Discussion
Discussion Forum : Diodes and Applications - General Questions (Q.No. 14)
14.
Testing a good diode with an ohmmeter should indicate
Discussion:
3 comments Page 1 of 1.
Pradipta Maity said:
9 years ago
Answer C.
In reverse bias as -ve voltage of the battery is connected with P side of the diode, it attracts the majority charge carrier hole and left the -ve ion across the junction of P side of Diode. Similarly, the +ve supply of battery attracts majority carrier electron and left +ve ion across the junction of n side of the diode. So the depletion region increases and more energy is required to make the diode is operational as the resistance is very high.
In the Forward bias as the depletion region decreases, resistance becomes low.
In reverse bias as -ve voltage of the battery is connected with P side of the diode, it attracts the majority charge carrier hole and left the -ve ion across the junction of P side of Diode. Similarly, the +ve supply of battery attracts majority carrier electron and left +ve ion across the junction of n side of the diode. So the depletion region increases and more energy is required to make the diode is operational as the resistance is very high.
In the Forward bias as the depletion region decreases, resistance becomes low.
Arvind kumar said:
1 decade ago
in forward biase deplation layer decrese so it offer low resistance & IN REVERSE deplation layer increse so it provide higher resistance
Shiva said:
1 decade ago
In forward bias diode allow the current from the anode to cathode. In reverse bias the diode block the current flow due to high resistance.
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