A series LCR circuit has $\mathrm{L}=0.01\, \mathrm{H}, \mathrm{R}=10\, \Omega$ and $\mathrm{C}=1 \mu \mathrm{F}$ and it is connected to ac voltage of amplitude $\left(\mathrm{V}_{\mathrm{m}}\right) 50 \mathrm{~V}$. At frequency $60 \%$ lower than resonant frequency, the amplitude of current will be approximately :