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 Vmsinωt 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.



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