If charge flowing through a conductor is given by q = 2t2+t+1. Then current flow at t = 2second will be:

i=dqdtq=2t2+t+1dqdt=4t+1 At t=2⇒i=9A

If charge flowing through a conductor is given by q = 2t2+t+1. Then current flow at t = 2second will be:

i=dqdtq=2t2+t+1dqdt=4t+1 At t=2⇒i=9A

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If charge flowing through a conductor is given by q = 2t²+t+1. Then current flow at t = 2second will be:

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answer is C.

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$\begin{array}{l} i = \frac{dq}{dt} \\ q = 2 t^{2} + t + 1 \\ \frac{dq}{dt} = 4 t + 1 \\ At t = 2 \Rightarrow i = 9 A \end{array}$

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If charge flowing through a conductor is given by q = 2t2+t+1. Then current flow at t = 2second will be:

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If charge flowing through a conductor is given by q = 2t²+t+1. Then current flow at t = 2second will be: