Forward biasing of a PN junction diode is indicated by which of the following connections?

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RRB ALP Electronics Mechanic 21 Jan 2019 Official Paper (Shift 3)
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  1. −ve to anode and +ve to cathode for full cycle
  2. +ve to anode and −ve to cathode for full cycle
  3. +ve to cathode and −ve to anode for one half cycle, and +ve to anode and −ve to cathode for the second half cycle.
  4. −ve to cathode and −ve to anode for full cycle

Answer (Detailed Solution Below)

Option 2 : +ve to anode and −ve to cathode for full cycle
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Detailed Solution

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Connection of PN junction diode

A diode can be connected in two ways:

1.) Forward biasing

A diode is said to be forward-biased if the positive terminal of the battery is connected to the anode and the negative terminal of the battery is connected to the cathode.

The forward bias diode works like a closed switch and allows the current through itself.

F1 Vinanti Engineering 27.02.23 D1

2.) Reverse biasing

A diode is said to be reverse-biased if the positive terminal of the battery is connected to the cathode and the negative terminal of the battery is connected to the anode.

The reverse bias diode blocks the current passage and works as an open switch.

F1 Vinanti Engineering 27.02.23 D2

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