Let $l, r, c$ and $v$ represent inductance, resistance, capacitance and voltage, respectively. The dimension of $\frac {1}{rcv}$ in $SI\,units$ will be
A$[LA^{-2}]$
B$[A^{-1}]$
C$[LTA]$
D$[LT^2]$
JEE MAIN 2019, Medium
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B$[A^{-1}]$
b $\frac{L}{{RCV}} = [{A^{ - 1}}]$
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