Physics · Alternating Current
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The mean value of sinusoidal emf over cycle is:
- A
Maximum
- B
Zero
- C
Maximum and minimum
- D
No change in emf
Zero: The mean value of a sinusoidal emf over a cycle is zero. This is because the positive and negative values of the sinusoidal wave cancel each other out when averaged over a complete cycle.
Therefore, the correct option is "Zero" as the mean value of a sinusoidal emf over a cycle is zero.
Maximum: The mean value of a sinusoidal electromotive force (emf) over a cycle is not the maximum value. The mean value represents the average value of the emf over a complete cycle and is generally not equal to the maximum value.
Zero: The mean value of a sinusoidal emf over a cycle is zero. This is because the positive and negative values of the sinusoidal wave cancel each other out when averaged over a complete cycle.
Maximum and minimum: The mean value is neither the maximum nor the minimum value of the sinusoidal emf. It is zero, as explained above.
No change in emf: The mean value does not indicate whether there is a change in the emf. It represents the average value over a cycle, irrespective of any changes that may occur.
Tagged under Physics · Alternating Current · 2009