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Q.

The alternating current in a circuit is described by the graph shown in figure. If r.m.s current from this graph (in A) is $\frac{n}{10},$ find $n$ .

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answer is 16.

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Detailed Solution

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$I_{r m s} = r m s c u r r e n t = \sqrt{\frac{1^{2} + 2^{2}}{2}} = \sqrt{\frac{5}{2}} = 1.58 A \approx 1.6 A$

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