The phase difference between the alternating current and emf is $\pi / 2$. Which of the following cannot be…

The phase difference between the alternating current and emf is $\pi / 2$. Which of the following cannot be the constituent of the circuit?
  1. C alone
  2. R.L
  3. L.C
  4. L alone

Solution

$0 < $ phase difference for $R-L$ circuit $ < \pi / 2$

Asked in: JEE Main 2005

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