CBSE Class 12 Physics 2017 Outside Delhi Set 1 Paper

Question : 13

Total: 26

(a) In the following diagram, is the junction diode forward biased or reverse biased?

(b) Draw the circuit diagram of a full wave rectifier and state how it works.

Solution:

(a) The nature of biasing
(b) Diagram of full wave rectifier Working
(a) Reverse Biased
(b) Diagram of full wave rectifier

Working: The diode D1 is forward biased during one half cycle and current flows through the resistor, but diode D2 is reverse biased and no current flows through it. During the other half of the signal, D1 gets reverse biased and no current passes through it, D2 gets forward biased and current flows through it. In both half cycles current, through the resistor, flows in the same direction.

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