Answer Posted / shah alam

we all know that the power generation in India is at 220v at frequency 50hz but in America it is 110v at frequency 60hz,the main reason behind this is that the impedance of inductor increases with frequency and that of capacitor decreases.if we find over all impedance of the combination of inductor,capacitor and resister we can see that the current supply would increase with a little decrease of frequency.the formula for current calculation is given as..
i= v/(r^2+(wL-1/wC)^2).
where,
w=2*pi*f.

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