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Question

The electric current in a charging R-C circuit is given by i=ioetRC where io, R and C are constant parameter of the circuit and t is time. Find the rate of change of current at (x)t=0, (y)t=RC, (z)t=10 RC

(i)ioRC (ii)0 (iii)ioRCe (iv)ioRC10e (v)ioe10RC


A

x-(i); y-(iii); z-(iv)

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B

x - (ii) ; y - (i) ; z - (v)

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C

x - (iii) ; y - (ii) ; z - (iv)

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D

x - (i) ; y - (iii) ; z - (ii)

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Solution

The correct option is A

x-(i); y-(iii); z-(iv)


i=i0etRC
i0 R,Care constants
To find the rate of change of i
i.e.,
didt
didt=ioRCetRC
(x) at t=0
didt=ioRC

(y) at t =RC
didt=ioRCe1=ioRCe
(z) at t = 10RC
didt=ioRCe10RcRC=ioRce10


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