Question

The voltage leaving the secondary coil of a transformer is equal to 240 V. The secondary coil is wrapped 8 times around the core. The primary coil is wrapped 25 times around the core. What is the initial voltage at the primary coil?

Answer 1

Answer:

750V

Explanation:

In a transformer,

$\frac{turns \: in \: primary \: coil }{turns \: in \: scondary \: coil}$

=

$\frac{voltage \: in \: primary \: coil}{voltage \: in \: secondary \: coil}$

So,

$\frac{25}{8 } = \frac{x}{240}$