Electronic Devices - BJT and FET Frequency Response - Discussion

Discussion Forum : BJT and FET Frequency Response - General Questions (Q.No. 17)
17.
In the input RC circuit of a single-stage BJT, by how much does the base voltage lead the input voltage at the cutoff frequency in the low-frequency region?
About 0º
45º
About 90º
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
1 comments Page 1 of 1.

Millize said:   4 years ago
Since @ cut-off Xc = R.
To get phase shift, θ = tan^-1(Xc/R),
if Xc=R then θ=tan^-1(1) = 45 degrees.

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