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When a unit step voltage drives a lag network the output
  • 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 is option 'B'. Can you explain this answer?
Verified Answer
When a unit step voltage drives a lag network the outputa)remains cons...
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 = Vi.
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When a unit step voltage drives a lag network the outputa)remains constant at unit step valueb)increases exponentially from zero to final valuec)decreases exponentially from 1 to 0d)either (b) of (c) depending on values of R and CCorrect answer is option 'B'. Can you explain this answer?
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