Entry Test MCQ :: Alternating Current

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An alternating current is represented by the equation I = I?sin?t which of the following equation represents an alternating current of frequency and amplitude twice that of the above current?

[A].	I = 2I?Sin(?t/2)	[B].	I = 2I?Sin(2?t)
[C].	I = 2ISin?t	[D].	I = I?sin(2?t)

Answer: Option B

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