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Network TheoryTransient Analysis

An initially uncharged capacitor is connected through a resistor to a DC source V. After one time constant, its voltage is approximately?

  • A0.368V
  • B0.5V
  • C0.632V
  • DV
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Correct Answer: C. 0.632V
Explanation: For RC charging, vc(t)=V(1-e^(-t/tau)). At t=tau, vc≈V(1-e^-1)=0.632V.
Reference: Standard network theory: transient analysis
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