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Combinations of components - class-X

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Multiple Choice

For a resistance R and capacitance C in series the impedence is twice that of a parallel combination of the same elements.The frequency of the applied emf shall be.

  1. $\dfrac{{2\pi }}{{Rc}}$
  2. $\dfrac{1}{{2\pi {R _1}c}}$
  3. $\dfrac{{2\pi }}{{\sqrt {RC} }}$
  4. $\dfrac{1}{{2\pi \sqrt {RC} }}$
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