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If the instantaneous current in a circuit is given by ampere, the rms value of the current is :

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\sqrt{2}

Zero

answer is B.

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Detailed Solution

Concept- The rms current is defined as the square root of the current's mean squared. It is mathematically possible. calculated by using the equation Question Image

.
The equation describing rms current Question Image

, can also be written as

, which denotes the average of i 2 for one complete cycle of current.
Since

, we can say that average of

will be

The average value of Cost for one complete cycle is zero, while the average value of Cos2t for one complete cycle can be remembered to be

.
Hence,

Solving,

Since

,
Using the value

We get,

.
Hence, option 2 is correct.

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