In an autotransformer of voltage ratio \(\frac{{{V_1}}}{{{V_2}}},\;{V_1} > {V_2}\), the fraction of power transferred inductively is proportional to
1
\(\frac{{{V_1}}}{{\left( {{V_1} + {V_2}} \right)}}\)
2
\(\frac{{{V_2}}}{{{V_1}}}\)
3
\(\frac{{\left( {{V_1} - {V_2}} \right)}}{{\left( {{V_1} + {V_2}} \right)}}\)
4
\(\frac{{\left( {{V_1} - {V_2}} \right)}}{{{V_1}}}\)