1.

In a certain circuit current changes with time according to \[i=2\sqrt{t}.\] r.m.s. value of current between \[t=2\] to \[t=4s\] will be

A. \[3A\] 
B. \[3\sqrt{3}A\]
C. \[{{0}^{o}}\] 
D. \[(2-\sqrt{2})A\]
Answer» D. \[(2-\sqrt{2})A\]


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