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  4. If L , C and R are the self inductance, capacitance and resistance respectively, which of the following does not have the dimension of time?

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Q. If $L , C$ and $R$ are the self inductance, capacitance and resistance respectively, which of the following does not have the dimension of time?

JEE MainJEE Main 2022Physical World, Units and Measurements

Solution:

$\left(\frac{L}{C}\right)$ does not have dimension of time. $RC , \frac{ L }{ R }$ are time constant while $\sqrt{ LC }$ is reciprocal of angular frequency or having dimension of time.