1.

A current I=I_(0)e^(-lambda l) is flowing in a circuit consisting of a parallel combination of resistance R and capacitance C. The total charge over the entire pulse period is

Answer»

`(I_(0))/(lambda)`
`(2I_(0))/(lambda)`
`I_(0)lambda`
`e^(I_(0)lambda)`

Solution :Here `I=I_(0)e^(-lambda t)`
`rArr (DQ)/(dt)=I_(0)e^(-lambda t) rArr int_(0)^(Q) dQ=I_(0) int_(0)^(OO) e^(-lambda t)dt`
`rArr Q=I_(0)[(e^(-lambda t))/(-lambda)]_(0)^(oo)=(I_(0))/(lambda)`


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