A) \[\sqrt{\text{2}}\text{A}\]
B) \[\frac{\text{1}}{\sqrt{\text{2}}}\text{A}\]
C) \[\text{2A}\]
D) \[\frac{\text{1}}{2}\text{A}\]
Correct Answer: A
Solution :
\[I=2\cos (\omega t+\theta )\] Comparing this equation with \[I={{I}_{0}}\cos (\omega t+\phi )\] \[{{I}_{0}}=2amp\] \[{{I}_{rms}}=\frac{{{i}_{0}}}{\sqrt{2}}=\frac{2}{\sqrt{2}}=\sqrt{2}amp\]
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