Question

if the primary of a transformer has 10 turns and the secondary of the transformer has 20 turns to what type of transformer does it belongs.express mathematical form related to this [it is 4 mark question]

Answer 1

Since, no. of turns in secondary coil are more than that of the no. of turns in primary coil (i.e, n_s > n_p). Hence, it is a step up transformer.
Mathematical form :
$$\begin{gathered} E_s=E_p\frac{n_s}{n_p} \\ where,E_{s}isvoltageacrosssecondarycoiland{E}_{p}isthevoltageacrosstheprimarycoil \end{gathered}$$