Electro Magnetic Induction And Alternating Currents Question 169

Question: The equation of alternating current is :

I=502,sin,400πt,amp . Then the frequency and root mean square of current are respectively

Options:

A) 200Hz,50amp

B) 400π,Hz,502,amp

C) 200,Hz,,502amp

D) 50Hz,200amp

Show Answer

Answer:

Correct Answer: A

Solution:

  • 2πnt=400πt
    ∴n=200 I0=502,amp r.m.s. current =I0/2=50,amp
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