If $R$ and $L$ represent respectively resistance and self inductance, which of the following combinations has the dimensions of frequency
If $R$ and $L$ represent respectively resistance and self inductance, which of the following combinations has the dimensions of frequency
- A
$\frac{R}{L}$
- B
$\frac{L}{R}$
- C
$\sqrt {\frac{R}{L}} $
- D
$\sqrt {\frac{L}{R}} $
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