When a unit step voltage drives a lag network the output remains constant at uni

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Question
When a unit step voltage drives a lag network the output
Options
A. remains constant at unit step value
B. increases exponentially from zero to final value
C. decreases exponentially from 1 to 0
D. either (b) of (c) depending on values of R and C

Correct Answer

increases exponentially from zero to final value

Explanation

At t = 0 the capacitor behaves as a short-circuit and output voltage is 0. At t = ? capacitor behaves as an open-circuit and V₀ = V_i.

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Options
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