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  • In an RC circuit while charging, the graph of in i versus time is as shown by the dotted line in the diagram figure, where i is the current. When the value of the resistance is doubled, which of th

In an RC circuit while charging, the graph of in i versus time is as shown by the dotted line in the diagram figure, where i is the current. When the value of the resistance is doubled, which of the solid curve best represents the variation of in i versus time?

Option: 1

P


Option: 2

Q


Option: 3

R


Option: 4

S


Answers (1)

best_answer

\mathrm{\text { In case of } R C \text { circuit } i=\frac{E}{R} e^{-t / R C}}

\mathrm{\therefore \quad \log _e i=-\frac{t}{R C}+\log _e \frac{E}{R}}

When R is doubled, the slope of the curve increases. Further at t = 0, the current will be less for an increased value of resistance

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