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KCET2016PhysicsAlternating Current

The rms value of current in a ( 50 ~Hz AC ) circuit is ( 6 ~A ). The average value of ( AC ) current over a cycle is

Options

  1. A( 6 2 )
  2. B( 3 2 )
  3. CZero
  4. D( 6 2 )

Correct answer

C. Zero

Step-by-step solution

Given, ( rms ) value of current ( =6 ~A ) [ I_ rms = I_ rms 2 =6 ~A ] Average current value of ac current over a cycle is zero. Since the average current over a half cycle is ( 0.637 I_ max ) and average current over the next half cycle is ( -0.637 I_ ) Therefore, average current over a complete cycle is zero.

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