The quantity of charge $q$ coulomb passing through a conductor varies with time tsecond according to the relation $q = 2 t^{2} + 8 t + 1$ .The current through the conductor at t=1 s is

10 A

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12 A

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13 A

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9 A

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Solution

The correct option is B
12 A

$q = 2 t^{2} + 8 t + 1 c l = \frac{d q}{d t} = 4 t = 8 I | t = 1 s = 4 (1) + 8 = 12 A$

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The quantity of charge q coulomb passing through a conductor varies with time tsecond according to the relation q=2t2+8t+1 .The current through the conductor at t=1 s is

The correct option is B 12 A q=2t2+8t+1cl=dqdt=4t=8I|t=1s=4(1)+8=12A

The quantity of charge $q$ coulomb passing through a conductor varies with time tsecond according to the relation $q = 2 t^{2} + 8 t + 1$ .The current through the conductor at t=1 s is

The correct option is B
12 A

$q = 2 t^{2} + 8 t + 1 c l = \frac{d q}{d t} = 4 t = 8 I | t = 1 s = 4 (1) + 8 = 12 A$