semiconductor-electronics--materials-devices-and-simple-circuits Question 6
Question: Q. 9. The output of the given circuit in Figure
(a) would be zero at all times.
(b) would be like a half wave rectifier with positive cycles in output.
(c) would be like a half wave rectifier with negative cycles in output.
(d) would belike that of a full wave rectifier.
[NCERT Exemplar]
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Solution:
Ans. Correctoption : (c)
Explanation: When positive cycle is at $A$, diode will be in forward bias and resistance due to diode is approximately zero so potential across diode will be about zero.
Similarly, when there is negative half cycle at $A$, diode will be in reverse bias and resistance will be maximum so potential difference across diode is $V_{m} \sin \omega t$ with negative at $A$. So we get only negative output at $A$ so it behaves like a half wave rectifier with negative cycle at $A$ in output.
