transformer:
# transformer is a static pice of aparatus by which ac power of in one voltage level in one circuit is transfer to another circuit at another voltage level maintaing same frequency .
# transformer works accroding to the principle of Faraday's Law of electromagnetic induction.
Brefly transformer is a device that
1) transfer electric power in one circuit to another
2) it does so without change in frequncy
3) accomplies electromegnetic induction
4) when two electric circuit are in mutual intactive influence of each oter.
working principle:
1) Transformer consists of two or more coils of wire wrapped around a common ferromagnate core.
2) One of the transformer winding is connected to source of ac electric power and the second winding
supplies electric power to load.
3) Transformer winding is connected to source of power is called primary winding or input winding
4) The winding wherethe voltage is induced is called secondery winding or output winding