A) 12 A
B) 8 A
C) 20 A
D) 28 A
Correct Answer: C
Solution :
(c) 20 A \[l=\frac{dq}{dt}=\frac{d}{dt}\left( 4{{t}^{2}}+4t+4 \right)\] \[=8t+4\] \[l\left( t=2\,s \right)=8\times 2+4\] \[=16+4=20\,A\]
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