Power factor of an RL or CR circuit is 1/root 2: new power factor when the frequency is doubled or halved

1. A.
   $\frac{1}{\sqrt{3}}$
2. B.
   $\frac{1}{\sqrt{5}}$
3. C.
   $\frac{1}{\sqrt{7}}$
4. D.
   $\frac{1}{\sqrt{11}}$

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1. A.
   $\frac{1}{\sqrt{3}}$
2. B.
   $\frac{1}{\sqrt{5}}$
3. C.
   $\frac{1}{\sqrt{7}}$
4. D.
   $\frac{1}{\sqrt{11}}$

Tap an option to check your answer.