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Question

The relation between current in a conductor and time is shown in the figure.

(ii) Write the expression of current in terms of time.

​​​​​​​[1 Mark]

A
i=i0tt0
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B
i=i0(1+tt0)
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C
i=i0(tt01)
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D
i=i0(1tt0)
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Solution

The correct option is D i=i0(1tt0)
The curve is a straight line having intercepts i0 on iaxis and t0 on taxis.
Te equation of straight line in intercept form is
tt0+ii0=1
ii0=1tt0
i=i0(1tt0)
So option (d) is correct.

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