Write emf equation of a transformer.
E.M.F equation of transformer is given by
where
Фm= Maximum value of ac flux linking with primary and secondary winding.
f = frequency of applied ac signal
N= number of turns on primary or on secondary.
Turns on primary winding = N1
Turns on secondary winding= N2
E.M.F= voltage induced in either primary or secondary winding
Voltage induced in primary = E1=4.44 Фm f N1volts
Voltage induced in primary = E2=4.44 Фm f N2volts