TRansformers

A transformer is a static piece of apparatus by means of which electric power in
one circuit is transformed into electric power of the same frequency in another
circuit. It can raise or lower the voltage in a circuit but with a corresponding
decrease or increase in current.

In
brief, a transformer is a device that

transfers electric power from one circiut to another.

it does so without a change of frequency.

it accomplishes this by electromagnetic induction and

where the two circuit are in mutual inductive influence of each

other.

Working of Transformer

E.M.F. Equation of a Transformer

Voltage Transformation Ratio ( K )