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In the circuit shown below | V0 | = 1 V to a certain set of values of ω, R and C. | V0 | will remain as 1 V even if:
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- None of these
- ω is halved
- R is halved
- C is doubled
Correct Option: A
The given circuit represent all pass filter.
| T.F. = H (j) = | = 1 | |
| 1 + (RC)2 |
when, R and C are changed by the same magnitude the transfer function is unchanged.
Hence alternative (A) is the correct choice.
