The unit of L/R is (where L = inductance a

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The unit of $L/R$ is (where $L$ = inductance and $R$ = resistance)

A

$\sec $

B

${\sec ^{ - 1}}$

C

Volt

D

Ampere

The unit of $L/R$ is (where $L$ = inductance and $R$ = resistance)

$[L/R]$ is a time constant so its unit is Second.