Question

An ideal step up transformer is primary coil has 500 turns and it’s secondary coil has 15,000 turns. The primary EMF is 120V. What is the EMF of the secondary?

Answer 1

$\frac{\varepsilon_1}{\varepsilon_2}=\frac {N_1 }{N_2},$

$\varepsilon_2=\varepsilon_1\frac{N_2}{N_1}=3.6~kV.$