Number of turns in the secondary coil, N_S = 2000

Number of turns in primary coil, N_P = ?

A.C. voltage in primary coil, E_P = 220 volt

A.C. voltage in secondary coil, E_S = 2200 volt

 $\because \frac{{\mathrm{N}}_{\mathrm{P}}}{{\mathrm{N}}_{\mathrm{S}}}=\frac{{\mathrm{E}}_{\mathrm{P}}}{{\mathrm{E}}_{\mathrm{S}}}$ 

or    N_P = 200